15020051042 has 4 divisors (see below), whose sum is σ = 22530076566. Its totient is φ = 7510025520.

The previous prime is 15020051029. The next prime is 15020051129. The reversal of 15020051042 is 24015002051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24015002051 = 29 ⋅828103519.

It can be written as a sum of positive squares in only one way, i.e., 15013845961 + 6205081 = 122531^2 + 2491^2 .

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 as a sum of consecutive naturals, namely, 3755012759 + ... + 3755012762.

Almost surely, 2^15020051042 is an apocalyptic number.

15020051042 is a deficient number, since it is larger than the sum of its proper divisors (7510025524).

15020051042 is an equidigital number, since it uses as much as digits as its factorization.

15020051042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510025523.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 15020051042 its reverse (24015002051), we get a palindrome (39035053093).

The spelling of 15020051042 in words is "fifteen billion, twenty million, fifty-one thousand, forty-two".