142971664 has 30 divisors (see below), whose sum is σ = 304483550. Its totient is φ = 64986240.

The previous prime is 142971641. The next prime is 142971671. The reversal of 142971664 is 466179241.

It can be written as a sum of positive squares in only one way, i.e., 139051264 + 3920400 = 11792^2 + 1980^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34989 + ... + 38860.

Almost surely, 2^142971664 is an apocalyptic number.

It is an amenable number.

142971664 is an abundant number, since it is smaller than the sum of its proper divisors (161511886).

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

142971664 is a wasteful number, since it uses less digits than its factorization.

142971664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73879 (or 73862 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 142971664 is about 11957.0758967232. The cubic root of 142971664 is about 522.8976105548.

The spelling of 142971664 in words is "one hundred forty-two million, nine hundred seventy-one thousand, six hundred sixty-four".