12015910242 has 54 divisors (see below), whose sum is σ = 30293205579. Its totient is φ = 3432187080.

The previous prime is 12015910237. The next prime is 12015910243. The reversal of 12015910242 is 24201951021.

It can be written as a sum of positive squares in only one way, i.e., 6007955121 + 6007955121 = 77511^2 + 77511^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=77511.

It is not an unprimeable number, because it can be changed into a prime (12015910243) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3253617 + ... + 3257307.

Almost surely, 2^12015910242 is an apocalyptic number.

12015910242 is an abundant number, since it is smaller than the sum of its proper divisors (18277295337).

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

12015910242 is an frugal number, since it uses more digits than its factorization.

12015910242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7404 (or 3703 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 12015910242 in words is "twelve billion, fifteen million, nine hundred ten thousand, two hundred forty-two".