142864636 has 12 divisors (see below), whose sum is σ = 253745128. Its totient is φ = 70366032.

The previous prime is 142864633. The next prime is 142864637. The reversal of 142864636 is 636468241.

142864636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142864633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266271 + ... + 266806.

Almost surely, 2^142864636 is an apocalyptic number.

It is an amenable number.

142864636 is a deficient number, since it is larger than the sum of its proper divisors (110880492).

142864636 is a wasteful number, since it uses less digits than its factorization.

142864636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533148 (or 533146 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 142864636 is about 11952.5995498887. The cubic root of 142864636 is about 522.7670983151.

The spelling of 142864636 in words is "one hundred forty-two million, eight hundred sixty-four thousand, six hundred thirty-six".