13140144 has 50 divisors (see below), whose sum is σ = 38035140. Its totient is φ = 4379616.

The previous prime is 13140137. The next prime is 13140151. The reversal of 13140144 is 44104131.

It is an interprime number because it is at equal distance from previous prime (13140137) and next prime (13140151).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3774 + ... + 6365.

Almost surely, 2^13140144 is an apocalyptic number.

It is an amenable number.

13140144 is an abundant number, since it is smaller than the sum of its proper divisors (24894996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13140144 is a wasteful number, since it uses less digits than its factorization.

13140144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10159 (or 10144 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 13140144 is about 3624.9336545653. The cubic root of 13140144 is about 235.9753876468.

Adding to 13140144 its reverse (44104131), we get a palindrome (57244275).

The spelling of 13140144 in words is "thirteen million, one hundred forty thousand, one hundred forty-four".