13117442 has 18 divisors (see below), whose sum is σ = 21414843. Its totient is φ = 6023472.

The previous prime is 13117427. The next prime is 13117453. The reversal of 13117442 is 24471131.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 9728161 + 3389281 = 3119^2 + 1841^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2561.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 66488 + ... + 66684.

Almost surely, 2^13117442 is an apocalyptic number.

13117442 is a deficient number, since it is larger than the sum of its proper divisors (8297401).

13117442 is an equidigital number, since it uses as much as digits as its factorization.

13117442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 212 counting only the distinct ones).

The product of its digits is 672, while the sum is 23.

The square root of 13117442 is about 3621.8009332375. The cubic root of 13117442 is about 235.8394124412.

Adding to 13117442 its reverse (24471131), we get a palindrome (37588573).

The spelling of 13117442 in words is "thirteen million, one hundred seventeen thousand, four hundred forty-two".