15530432042 has 16 divisors (see below), whose sum is σ = 24670878912. Its totient is φ = 7306987200.

The previous prime is 15530432023. The next prime is 15530432051. The reversal of 15530432042 is 24023403551.

It is a happy number.

It is a super-2 number, since 2×15530432042² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15530431996 and 15530432014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139253 + ... + 224615.

It is an arithmetic number, because the mean of its divisors is an integer number (1541929932).

Almost surely, 2^15530432042 is an apocalyptic number.

15530432042 is a deficient number, since it is larger than the sum of its proper divisors (9140446870).

15530432042 is a wasteful number, since it uses less digits than its factorization.

15530432042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90733.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 15530432042 its reverse (24023403551), we get a palindrome (39553835593).

The spelling of 15530432042 in words is "fifteen billion, five hundred thirty million, four hundred thirty-two thousand, forty-two".