15530423042 has 8 divisors (see below), whose sum is σ = 23296587132. Its totient is φ = 7764894000.

The previous prime is 15530423011. The next prime is 15530423057. The reversal of 15530423042 is 24032403551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14397360121 + 1133062921 = 119989^2 + 33661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 15530422996 and 15530423014.

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 in 3 ways as a sum of consecutive naturals, for example, 92009 + ... + 198812.

Almost surely, 2^15530423042 is an apocalyptic number.

15530423042 is a deficient number, since it is larger than the sum of its proper divisors (7766164090).

15530423042 is a wasteful number, since it uses less digits than its factorization.

15530423042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317524.

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

Adding to 15530423042 its reverse (24032403551), we get a palindrome (39562826593).

The spelling of 15530423042 in words is "fifteen billion, five hundred thirty million, four hundred twenty-three thousand, forty-two".