142644664 has 8 divisors (see below), whose sum is σ = 267458760. Its totient is φ = 71322328.

The previous prime is 142644659. The next prime is 142644727. The reversal of 142644664 is 466446241.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8915284 + ... + 8915299.

It is an arithmetic number, because the mean of its divisors is an integer number (33432345).

Almost surely, 2^142644664 is an apocalyptic number.

It is an amenable number.

142644664 is a deficient number, since it is larger than the sum of its proper divisors (124814096).

142644664 is a wasteful number, since it uses less digits than its factorization.

142644664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17830589 (or 17830585 counting only the distinct ones).

The product of its digits is 110592, while the sum is 37.

The square root of 142644664 is about 11943.3941574412. The cubic root of 142644664 is about 522.4986549419.

The spelling of 142644664 in words is "one hundred forty-two million, six hundred forty-four thousand, six hundred sixty-four".