142645904 has 20 divisors (see below), whose sum is σ = 276647100. Its totient is φ = 71253120.

The previous prime is 142645897. The next prime is 142645957. The reversal of 142645904 is 409546241.

It can be written as a sum of positive squares in 2 ways, for example, as 125440000 + 17205904 = 11200^2 + 4148^2 .

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, 15122 + ... + 22670.

It is an arithmetic number, because the mean of its divisors is an integer number (13832355).

Almost surely, 2^142645904 is an apocalyptic number.

It is an amenable number.

142645904 is a deficient number, since it is larger than the sum of its proper divisors (134001196).

142645904 is a wasteful number, since it uses less digits than its factorization.

142645904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8738 (or 8732 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 142645904 is about 11943.4460688697. The cubic root of 142645904 is about 522.5001689521.

The spelling of 142645904 in words is "one hundred forty-two million, six hundred forty-five thousand, nine hundred four".