142539757 has 2 divisors, whose sum is σ = 142539758. Its totient is φ = 142539756.

The previous prime is 142539731. The next prime is 142539769. The reversal of 142539757 is 757935241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142539721 + 36 = 11939^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 142539757 - 2¹¹ = 142537709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142539707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71269878 + 71269879.

It is an arithmetic number, because the mean of its divisors is an integer number (71269879).

Almost surely, 2^142539757 is an apocalyptic number.

It is an amenable number.

142539757 is a deficient number, since it is larger than the sum of its proper divisors (1).

142539757 is an equidigital number, since it uses as much as digits as its factorization.

142539757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 43.

The square root of 142539757 is about 11939.0015076639. The cubic root of 142539757 is about 522.3705342261.

The spelling of 142539757 in words is "one hundred forty-two million, five hundred thirty-nine thousand, seven hundred fifty-seven".