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42131442430 = 25711197277747
BaseRepresentation
bin100111001111001110…
…101100101011111110
311000202012202000211201
4213033032230223332
51142241122124210
631204355010114
73021025231450
oct471716545376
9130665660751
1042131442430
1116960112310
1281b989993a
133c8582babc
1420796c02d0
151168bb053a
hex9cf3acafe

42131442430 has 64 divisors (see below), whose sum is σ = 95029811712. Its totient is φ = 13065171840.

The previous prime is 42131442427. The next prime is 42131442461. The reversal of 42131442430 is 3424413124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12817 + ... + 290563.

It is an arithmetic number, because the mean of its divisors is an integer number (1484840808).

Almost surely, 242131442430 is an apocalyptic number.

42131442430 is an abundant number, since it is smaller than the sum of its proper divisors (52898369282).

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

42131442430 is a wasteful number, since it uses less digits than its factorization.

42131442430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277969.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 42131442430 its reverse (3424413124), we get a palindrome (45555855554).

The spelling of 42131442430 in words is "forty-two billion, one hundred thirty-one million, four hundred forty-two thousand, four hundred thirty".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 77 110 154 197 385 394 770 985 1379 1970 2167 2758 4334 6895 10835 13790 15169 21670 30338 75845 151690 277747 555494 1388735 1944229 2777470 3055217 3888458 6110434 9721145 15276085 19442290 21386519 30552170 42773038 54716159 106932595 109432318 213865190 273580795 383013113 547161590 601877749 766026226 1203755498 1915065565 3009388745 3830131130 4213144243 6018777490 8426288486 21065721215 42131442430