15140142 has 16 divisors (see below), whose sum is σ = 33644880. Its totient is φ = 5046696.

The previous prime is 15140137. The next prime is 15140201. The reversal of 15140142 is 24104151.

15140142 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140133 + ... + 140240.

It is an arithmetic number, because the mean of its divisors is an integer number (2102805).

Almost surely, 2^15140142 is an apocalyptic number.

15140142 is an abundant number, since it is smaller than the sum of its proper divisors (18504738).

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

15140142 is a wasteful number, since it uses less digits than its factorization.

15140142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280384 (or 280378 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 15140142 is about 3891.0335387915. The cubic root of 15140142 is about 247.3868720824.

Adding to 15140142 its reverse (24104151), we get a palindrome (39244293).

The spelling of 15140142 in words is "fifteen million, one hundred forty thousand, one hundred forty-two".