15142390 has 16 divisors (see below), whose sum is σ = 27631008. Its totient is φ = 5973696.

The previous prime is 15142381. The next prime is 15142399. The reversal of 15142390 is 9324151.

It is an interprime number because it is at equal distance from previous prime (15142381) and next prime (15142399).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15142399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9642 + ... + 11101.

It is an arithmetic number, because the mean of its divisors is an integer number (1726938).

Almost surely, 2^15142390 is an apocalyptic number.

15142390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15142390 is a deficient number, since it is larger than the sum of its proper divisors (12488618).

15142390 is a wasteful number, since it uses less digits than its factorization.

15142390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20823.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 15142390 is about 3891.3223973349. The cubic root of 15142390 is about 247.3991154322.

The spelling of 15142390 in words is "fifteen million, one hundred forty-two thousand, three hundred ninety".