13649042 has 12 divisors (see below), whose sum is σ = 22504398. Its totient is φ = 6204000.

The previous prime is 13649033. The next prime is 13649047. The reversal of 13649042 is 24094631.

It can be written as a sum of positive squares in only one way, i.e., 10962721 + 2686321 = 3311^2 + 1639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13648996 and 13649014.

It is not an unprimeable number, because it can be changed into a prime (13649047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27959 + ... + 28442.

Almost surely, 2^13649042 is an apocalyptic number.

13649042 is a deficient number, since it is larger than the sum of its proper divisors (8855356).

13649042 is a wasteful number, since it uses less digits than its factorization.

13649042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56425 (or 56414 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 13649042 is about 3694.4609891025. The cubic root of 13649042 is about 238.9832098987.

The spelling of 13649042 in words is "thirteen million, six hundred forty-nine thousand, forty-two".