15202431242 has 4 divisors (see below), whose sum is σ = 22803646866. Its totient is φ = 7601215620.

The previous prime is 15202431229. The next prime is 15202431289. The reversal of 15202431242 is 24213420251.

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., 10229501881 + 4972929361 = 101141^2 + 70519^2 .

It is a super-2 number, since 2×15202431242² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3800607809 + ... + 3800607812.

Almost surely, 2^15202431242 is an apocalyptic number.

15202431242 is a deficient number, since it is larger than the sum of its proper divisors (7601215624).

15202431242 is an equidigital number, since it uses as much as digits as its factorization.

15202431242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7601215623.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 15202431242 its reverse (24213420251), we get a palindrome (39415851493).

The spelling of 15202431242 in words is "fifteen billion, two hundred two million, four hundred thirty-one thousand, two hundred forty-two".