15020422042 has 4 divisors (see below), whose sum is σ = 22530633066. Its totient is φ = 7510211020.

The previous prime is 15020422031. The next prime is 15020422091. The reversal of 15020422042 is 24022402051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14318754921 + 701667121 = 119661^2 + 26489^2 .

It is a super-2 number, since 2×15020422042² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3755105509 + ... + 3755105512.

Almost surely, 2^15020422042 is an apocalyptic number.

15020422042 is a deficient number, since it is larger than the sum of its proper divisors (7510211024).

15020422042 is an equidigital number, since it uses as much as digits as its factorization.

15020422042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510211023.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 15020422042 its reverse (24022402051), we get a palindrome (39042824093).

The spelling of 15020422042 in words is "fifteen billion, twenty million, four hundred twenty-two thousand, forty-two".