142646388 has 48 divisors (see below), whose sum is σ = 353283840. Its totient is φ = 44642304.

The previous prime is 142646381. The next prime is 142646393. The reversal of 142646388 is 883646241.

It is a hoax number, since the sum of its digits (42) 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 (142646381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136773 + ... + 137811.

It is an arithmetic number, because the mean of its divisors is an integer number (7360080).

Almost surely, 2^142646388 is an apocalyptic number.

It is an amenable number.

142646388 is an abundant number, since it is smaller than the sum of its proper divisors (210637452).

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

142646388 is a wasteful number, since it uses less digits than its factorization.

142646388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736 (or 1734 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 142646388 is about 11943.4663310113. The cubic root of 142646388 is about 522.5007599021.

The spelling of 142646388 in words is "one hundred forty-two million, six hundred forty-six thousand, three hundred eighty-eight".