142252644 has 48 divisors (see below), whose sum is σ = 340494336. Its totient is φ = 46202400.

The previous prime is 142252637. The next prime is 142252681. The reversal of 142252644 is 446252241.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174999 + ... + 175809.

It is an arithmetic number, because the mean of its divisors is an integer number (7093632).

Almost surely, 2^142252644 is an apocalyptic number.

It is an amenable number.

142252644 is an abundant number, since it is smaller than the sum of its proper divisors (198241692).

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

142252644 is a wasteful number, since it uses less digits than its factorization.

142252644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176 (or 1174 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 142252644 is about 11926.9712836076. The cubic root of 142252644 is about 522.0195673879.

The spelling of 142252644 in words is "one hundred forty-two million, two hundred fifty-two thousand, six hundred forty-four".