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1242050030 = 251331311991
BaseRepresentation
bin100101000001000…
…0010110111101110
310012120010200022222
41022002002313232
510020431100110
6323125235342
742531152054
oct11202026756
93176120288
101242050030
11588117631
122a7b62b52
1316a428160
14bad581d4
1574094c55
hex4a082dee

1242050030 has 64 divisors (see below), whose sum is σ = 2495840256. Its totient is φ = 441936000.

The previous prime is 1242050011. The next prime is 1242050053. The reversal of 1242050030 is 300502421.

It is a junction number, because it is equal to n+sod(n) for n = 1242049990 and 1242050008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1252835 + ... + 1253825.

It is an arithmetic number, because the mean of its divisors is an integer number (38997504).

Almost surely, 21242050030 is an apocalyptic number.

1242050030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242050030 is an abundant number, since it is smaller than the sum of its proper divisors (1253790226).

1242050030 is a wasteful number, since it uses less digits than its factorization.

1242050030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1242050030 is about 35242.7301723348. The cubic root of 1242050030 is about 1074.9287942740.

Adding to 1242050030 its reverse (300502421), we get a palindrome (1542552451).

The spelling of 1242050030 in words is "one billion, two hundred forty-two million, fifty thousand, thirty".

Divisors: 1 2 5 10 13 26 31 62 65 130 155 310 311 403 622 806 991 1555 1982 2015 3110 4030 4043 4955 8086 9641 9910 12883 19282 20215 25766 30721 40430 48205 61442 64415 96410 125333 128830 153605 250666 307210 308201 399373 616402 626665 798746 1253330 1541005 1996865 3082010 3993730 4006613 8013226 9554231 19108462 20033065 40066130 47771155 95542310 124205003 248410006 621025015 1242050030