142664988 has 12 divisors (see below), whose sum is σ = 332885000. Its totient is φ = 47554992.

The previous prime is 142664987. The next prime is 142664993. The reversal of 142664988 is 889466241.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142664983) 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, 5944363 + ... + 5944386.

Almost surely, 2^142664988 is an apocalyptic number.

It is an amenable number.

142664988 is an abundant number, since it is smaller than the sum of its proper divisors (190220012).

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

142664988 is a wasteful number, since it uses less digits than its factorization.

142664988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11888756 (or 11888754 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 142664988 is about 11944.2449740450. The cubic root of 142664988 is about 522.5234689519.

The spelling of 142664988 in words is "one hundred forty-two million, six hundred sixty-four thousand, nine hundred eighty-eight".