13642144 has 24 divisors (see below), whose sum is σ = 27125280. Its totient is φ = 6753216.

The previous prime is 13642103. The next prime is 13642163. The reversal of 13642144 is 44124631.

It is a super-2 number, since 2×13642144² = 372216185833472, which contains 22 as substring.

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, 1227 + ... + 5365.

It is an arithmetic number, because the mean of its divisors is an integer number (1130220).

Almost surely, 2^13642144 is an apocalyptic number.

It is an amenable number.

13642144 is a deficient number, since it is larger than the sum of its proper divisors (13483136).

13642144 is a wasteful number, since it uses less digits than its factorization.

13642144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252 (or 4244 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 13642144 is about 3693.5273113922. The cubic root of 13642144 is about 238.9429437279.

Adding to 13642144 its reverse (44124631), we get a palindrome (57766775).

The spelling of 13642144 in words is "thirteen million, six hundred forty-two thousand, one hundred forty-four".