15139991242 has 8 divisors (see below), whose sum is σ = 22824108000. Its totient is φ = 7531955244.

The previous prime is 15139991221. The next prime is 15139991351. The reversal of 15139991242 is 24219993151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 15139991192 and 15139991201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19019692 + ... + 19020487.

It is an arithmetic number, because the mean of its divisors is an integer number (2853013500).

Almost surely, 2^15139991242 is an apocalyptic number.

15139991242 is a deficient number, since it is larger than the sum of its proper divisors (7684116758).

15139991242 is a wasteful number, since it uses less digits than its factorization.

15139991242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38040380.

The product of its digits is 174960, while the sum is 46.

The spelling of 15139991242 in words is "fifteen billion, one hundred thirty-nine million, nine hundred ninety-one thousand, two hundred forty-two".