142239752 has 8 divisors (see below), whose sum is σ = 266699550. Its totient is φ = 71119872.

The previous prime is 142239707. The next prime is 142239761. The reversal of 142239752 is 257932241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 134699236 + 7540516 = 11606^2 + 2746^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8889977 + ... + 8889992.

Almost surely, 2^142239752 is an apocalyptic number.

It is an amenable number.

142239752 is a deficient number, since it is larger than the sum of its proper divisors (124459798).

142239752 is a wasteful number, since it uses less digits than its factorization.

142239752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17779975 (or 17779971 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 142239752 is about 11926.4308156296. The cubic root of 142239752 is about 522.0037971372.

The spelling of 142239752 in words is "one hundred forty-two million, two hundred thirty-nine thousand, seven hundred fifty-two".