13042691 has 8 divisors (see below), whose sum is σ = 13284480. Its totient is φ = 12802752.

The previous prime is 13042681. The next prime is 13042693. The reversal of 13042691 is 19624031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13042691 is a prime.

It is a super-2 number, since 2×13042691² = 340223577042962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13042691.

It is not an unprimeable number, because it can be changed into a prime (13042693) 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, 26990 + ... + 27468.

It is an arithmetic number, because the mean of its divisors is an integer number (1660560).

Almost surely, 2^13042691 is an apocalyptic number.

13042691 is a deficient number, since it is larger than the sum of its proper divisors (241789).

13042691 is an equidigital number, since it uses as much as digits as its factorization.

13042691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 13042691 is about 3611.4665995963. The cubic root of 13042691 is about 235.3905742803.

The spelling of 13042691 in words is "thirteen million, forty-two thousand, six hundred ninety-one".