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1242213050 = 2521389109197
BaseRepresentation
bin100101000001010…
…1010101010111010
310012120102221221202
41022002222222322
510021001304200
6323132534202
742532431251
oct11202525272
93176387852
101242213050
11588219061
122a8021362
1316a484410
14bad9b798
15740c81d5
hex4a0aaaba

1242213050 has 96 divisors (see below), whose sum is σ = 2552180400. Its totient is φ = 447068160.

The previous prime is 1242213043. The next prime is 1242213073. The reversal of 1242213050 is 503122421.

It can be written as a sum of positive squares in 24 ways, for example, as 8025889 + 1234187161 = 2833^2 + 35131^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6305552 + ... + 6305748.

Almost surely, 21242213050 is an apocalyptic number.

1242213050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242213050 is an abundant number, since it is smaller than the sum of its proper divisors (1309967350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242213050 is a wasteful number, since it uses less digits than its factorization.

1242213050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1242213050 is about 35245.0429138624. The cubic root of 1242213050 is about 1074.9758206207.

Adding to 1242213050 its reverse (503122421), we get a palindrome (1745335471).

The spelling of 1242213050 in words is "one billion, two hundred forty-two million, two hundred thirteen thousand, fifty".

Divisors: 1 2 5 10 13 25 26 50 65 89 109 130 178 197 218 325 394 445 545 650 890 985 1090 1157 1417 1970 2225 2314 2561 2725 2834 4450 4925 5122 5450 5785 7085 9701 9850 11570 12805 14170 17533 19402 21473 25610 28925 35066 35425 42946 48505 57850 64025 70850 87665 97010 107365 126113 128050 175330 214730 227929 242525 252226 279149 438325 455858 485050 536825 558298 630565 876650 1073650 1139645 1261130 1395745 1911097 2279290 2791490 3152825 3822194 5698225 6305650 6978725 9555485 11396450 13957450 19110970 24844261 47777425 49688522 95554850 124221305 248442610 621106525 1242213050