15000000842 has 8 divisors (see below), whose sum is σ = 22500544836. Its totient is φ = 7499819232.

The previous prime is 15000000817. The next prime is 15000000857. The reversal of 15000000842 is 24800000051.

It can be written as a sum of positive squares in 2 ways, for example, as 14779508041 + 220492801 = 121571^2 + 14849^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69398 + ... + 186590.

Almost surely, 2^15000000842 is an apocalyptic number.

15000000842 is a deficient number, since it is larger than the sum of its proper divisors (7500543994).

15000000842 is a wasteful number, since it uses less digits than its factorization.

15000000842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181192.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 15000000842 its reverse (24800000051), we get a palindrome (39800000893).

The spelling of 15000000842 in words is "fifteen billion, eight hundred forty-two", and thus it is an aban number.