142815872 has 32 divisors (see below), whose sum is σ = 289353600. Its totient is φ = 70193920.

The previous prime is 142815851. The next prime is 142815887. The reversal of 142815872 is 278518241.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1904 + ... + 17007.

It is an arithmetic number, because the mean of its divisors is an integer number (9042300).

Almost surely, 2^142815872 is an apocalyptic number.

It is an amenable number.

142815872 is an abundant number, since it is smaller than the sum of its proper divisors (146537728).

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

142815872 is an equidigital number, since it uses as much as digits as its factorization.

142815872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18984 (or 18972 counting only the distinct ones).

The product of its digits is 35840, while the sum is 38.

The square root of 142815872 is about 11950.5594848107. The cubic root of 142815872 is about 522.7076128318.

The spelling of 142815872 in words is "one hundred forty-two million, eight hundred fifteen thousand, eight hundred seventy-two".