15401531142 has 24 divisors (see below), whose sum is σ = 33372991080. Its totient is φ = 5133381120.

The previous prime is 15401531111. The next prime is 15401531153. The reversal of 15401531142 is 24113510451.

15401531142 is a `hidden beast` number, since 1 + 540 + 1 + 5 + 3 + 114 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210109 + ... + 273767.

It is an arithmetic number, because the mean of its divisors is an integer number (1390541295).

Almost surely, 2^15401531142 is an apocalyptic number.

15401531142 is an abundant number, since it is smaller than the sum of its proper divisors (17971459938).

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

15401531142 is a wasteful number, since it uses less digits than its factorization.

15401531142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77108 (or 77105 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 15401531142 in words is "fifteen billion, four hundred one million, five hundred thirty-one thousand, one hundred forty-two".