142057457 has 16 divisors (see below), whose sum is σ = 156511440. Its totient is φ = 128335872.

The previous prime is 142057451. The next prime is 142057459. The reversal of 142057457 is 754750241.

It can be written as a sum of positive squares in 8 ways, for example, as 7706176 + 134351281 = 2776^2 + 11591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142057457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142057451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94403 + ... + 95895.

It is an arithmetic number, because the mean of its divisors is an integer number (9781965).

Almost surely, 2^142057457 is an apocalyptic number.

142057457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

142057457 is a deficient number, since it is larger than the sum of its proper divisors (14453983).

142057457 is a wasteful number, since it uses less digits than its factorization.

142057457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732.

The product of its (nonzero) digits is 39200, while the sum is 35.

The square root of 142057457 is about 11918.7858861547. The cubic root of 142057457 is about 521.7807011280.

The spelling of 142057457 in words is "one hundred forty-two million, fifty-seven thousand, four hundred fifty-seven".