12401152542 has 32 divisors (see below), whose sum is σ = 27582197760. Its totient is φ = 4130105400.

The previous prime is 12401152513. The next prime is 12401152559. The reversal of 12401152542 is 24525110421.

It is a happy number.

12401152542 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 115 + 2 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 37608 + ... + 161915.

It is an arithmetic number, because the mean of its divisors is an integer number (861943680).

Almost surely, 2^12401152542 is an apocalyptic number.

12401152542 is an abundant number, since it is smaller than the sum of its proper divisors (15181045218).

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

12401152542 is a wasteful number, since it uses less digits than its factorization.

12401152542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200685 (or 200679 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 12401152542 its reverse (24525110421), we get a palindrome (36926262963).

The spelling of 12401152542 in words is "twelve billion, four hundred one million, one hundred fifty-two thousand, five hundred forty-two".