142873857 has 36 divisors (see below), whose sum is σ = 242052096. Its totient is φ = 80967600.

The previous prime is 142873853. The next prime is 142873877. The reversal of 142873857 is 758378241.

It is not a de Polignac number, because 142873857 - 2² = 142873853 is a prime.

Its product of digits (376320) is a multiple of the sum of its prime divisors (2688).

It is not an unprimeable number, because it can be changed into a prime (142873853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 54732 + ... + 57282.

Almost surely, 2^142873857 is an apocalyptic number.

It is an amenable number.

142873857 is a deficient number, since it is larger than the sum of its proper divisors (99178239).

142873857 is a wasteful number, since it uses less digits than its factorization.

142873857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698 (or 2688 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 142873857 is about 11952.9852756539. The cubic root of 142873857 is about 522.7783451658.

The spelling of 142873857 in words is "one hundred forty-two million, eight hundred seventy-three thousand, eight hundred fifty-seven".