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13810042 = 239717393
BaseRepresentation
bin110100101011…
…100101111010
3221222121211001
4310223211322
512013410132
61211555214
7225245341
oct64534572
927877731
1013810042
117882764
12475bb0a
132b26b2c
141b96b58
15132bce7
hexd2b97a

13810042 has 8 divisors (see below), whose sum is σ = 20768436. Its totient is φ = 6887232.

The previous prime is 13810037. The next prime is 13810079. The reversal of 13810042 is 24001831.

It can be written as a sum of positive squares in 2 ways, for example, as 13756681 + 53361 = 3709^2 + 231^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7903 + ... + 9490.

Almost surely, 213810042 is an apocalyptic number.

13810042 is a deficient number, since it is larger than the sum of its proper divisors (6958394).

13810042 is a wasteful number, since it uses less digits than its factorization.

13810042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17792.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 13810042 is about 3716.1864861710. The cubic root of 13810042 is about 239.9191973356.

Adding to 13810042 its reverse (24001831), we get a palindrome (37811873).

The spelling of 13810042 in words is "thirteen million, eight hundred ten thousand, forty-two".

Divisors: 1 2 397 794 17393 34786 6905021 13810042