12500310042 has 32 divisors (see below), whose sum is σ = 30303783360. Its totient is φ = 3787972560.

The previous prime is 12500310023. The next prime is 12500310059. The reversal of 12500310042 is 24001300521.

It is a super-2 number, since 2×12500310042² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12500309997 and 12500310024.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10521553 + ... + 10522740.

It is an arithmetic number, because the mean of its divisors is an integer number (946993230).

Almost surely, 2^12500310042 is an apocalyptic number.

12500310042 is an abundant number, since it is smaller than the sum of its proper divisors (17803473318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12500310042 is a wasteful number, since it uses less digits than its factorization.

12500310042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21044315 (or 21044309 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 12500310042 its reverse (24001300521), we get a palindrome (36501610563).

The spelling of 12500310042 in words is "twelve billion, five hundred million, three hundred ten thousand, forty-two".