15000782042 has 4 divisors (see below), whose sum is σ = 22501173066. Its totient is φ = 7500391020.

The previous prime is 15000782029. The next prime is 15000782047. The reversal of 15000782042 is 24028700051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24028700051 = 26107 ⋅920393.

It can be written as a sum of positive squares in only one way, i.e., 12604777441 + 2396004601 = 112271^2 + 48949^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15000781996 and 15000782014.

It is not an unprimeable number, because it can be changed into a prime (15000782047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3750195509 + ... + 3750195512.

Almost surely, 2^15000782042 is an apocalyptic number.

15000782042 is a deficient number, since it is larger than the sum of its proper divisors (7500391024).

15000782042 is an equidigital number, since it uses as much as digits as its factorization.

15000782042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500391023.

The product of its (nonzero) digits is 4480, while the sum is 29.

The spelling of 15000782042 in words is "fifteen billion, seven hundred eighty-two thousand, forty-two".