15140139 has 32 divisors (see below), whose sum is σ = 23998464. Its totient is φ = 8311680.

The previous prime is 15140137. The next prime is 15140201. The reversal of 15140139 is 93104151.

15140139 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15140139 - 2¹ = 15140137 is a prime.

15140139 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (15140137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67782 + ... + 68004.

It is an arithmetic number, because the mean of its divisors is an integer number (749952).

Almost surely, 2^15140139 is an apocalyptic number.

15140139 is a deficient number, since it is larger than the sum of its proper divisors (8858325).

15140139 is a wasteful number, since it uses less digits than its factorization.

15140139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 15140139 is about 3891.0331532898. The cubic root of 15140139 is about 247.3868557426.

The spelling of 15140139 in words is "fifteen million, one hundred forty thousand, one hundred thirty-nine".