142457872 has 20 divisors (see below), whose sum is σ = 276299776. Its totient is φ = 71154720.

The previous prime is 142457869. The next prime is 142457873. The reversal of 142457872 is 278754241.

It is not an unprimeable number, because it can be changed into a prime (142457873) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13297 + ... + 21487.

Almost surely, 2^142457872 is an apocalyptic number.

It is an amenable number.

142457872 is a deficient number, since it is larger than the sum of its proper divisors (133841904).

142457872 is a wasteful number, since it uses less digits than its factorization.

142457872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9286 (or 9280 counting only the distinct ones).

The product of its digits is 125440, while the sum is 40.

The square root of 142457872 is about 11935.5717081336. The cubic root of 142457872 is about 522.2704861048.

The spelling of 142457872 in words is "one hundred forty-two million, four hundred fifty-seven thousand, eight hundred seventy-two".