15120505240 has 32 divisors (see below), whose sum is σ = 34051914000. Its totient is φ = 6042730624.

The previous prime is 15120505237. The next prime is 15120505277. The reversal of 15120505240 is 4250502151.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126070 + ... + 214789.

Almost surely, 2^15120505240 is an apocalyptic number.

15120505240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15120505240 is an abundant number, since it is smaller than the sum of its proper divisors (18931408760).

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

15120505240 is a wasteful number, since it uses less digits than its factorization.

15120505240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341979 (or 341975 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 15120505240 in words is "fifteen billion, one hundred twenty million, five hundred five thousand, two hundred forty".