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10042221431 = 118531070257
BaseRepresentation
bin10010101101001000…
…00010001101110111
3221220212012201001002
421112210002031313
5131031302041211
64340251353515
7503566321334
oct112644021567
927825181032
1010042221431
114293632660
121b4315289b
13c40681178
146b39d398b
153db94d03b
hex256902377

10042221431 has 8 divisors (see below), whose sum is σ = 10968003984. Its totient is φ = 9118581120.

The previous prime is 10042221403. The next prime is 10042221443. The reversal of 10042221431 is 13412224001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10042221431 - 210 = 10042220407 is a prime.

It is a super-2 number, since 2×100422214312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10042221401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525746 + ... + 544511.

It is an arithmetic number, because the mean of its divisors is an integer number (1371000498).

Almost surely, 210042221431 is an apocalyptic number.

10042221431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10042221431 is a deficient number, since it is larger than the sum of its proper divisors (925782553).

10042221431 is a wasteful number, since it uses less digits than its factorization.

10042221431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071121.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 10042221431 its reverse (13412224001), we get a palindrome (23454445432).

The spelling of 10042221431 in words is "ten billion, forty-two million, two hundred twenty-one thousand, four hundred thirty-one".

Divisors: 1 11 853 9383 1070257 11772827 912929221 10042221431