13057742 has 4 divisors (see below), whose sum is σ = 19586616. Its totient is φ = 6528870.

The previous prime is 13057711. The next prime is 13057753. The reversal of 13057742 is 24775031.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×13057742² = 341009252277128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3264434 + ... + 3264437.

It is an arithmetic number, because the mean of its divisors is an integer number (4896654).

Almost surely, 2^13057742 is an apocalyptic number.

13057742 is a deficient number, since it is larger than the sum of its proper divisors (6528874).

13057742 is an equidigital number, since it uses as much as digits as its factorization.

13057742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6528873.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 13057742 is about 3613.5497782651. The cubic root of 13057742 is about 235.4810847843.

The spelling of 13057742 in words is "thirteen million, fifty-seven thousand, seven hundred forty-two".