142057957 has 2 divisors, whose sum is σ = 142057958. Its totient is φ = 142057956.

The previous prime is 142057943. The next prime is 142057987. The reversal of 142057957 is 759750241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134583201 + 7474756 = 11601^2 + 2734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142057957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142057987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71028978 + 71028979.

It is an arithmetic number, because the mean of its divisors is an integer number (71028979).

Almost surely, 2^142057957 is an apocalyptic number.

It is an amenable number.

142057957 is a deficient number, since it is larger than the sum of its proper divisors (1).

142057957 is an equidigital number, since it uses as much as digits as its factorization.

142057957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 142057957 is about 11918.8068614270. The cubic root of 142057957 is about 521.7813132982.

The spelling of 142057957 in words is "one hundred forty-two million, fifty-seven thousand, nine hundred fifty-seven".