140839157 has 2 divisors, whose sum is σ = 140839158. Its totient is φ = 140839156.

The previous prime is 140839133. The next prime is 140839183. The reversal of 140839157 is 751938041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76983076 + 63856081 = 8774^2 + 7991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140839157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140839157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140839357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70419578 + 70419579.

It is an arithmetic number, because the mean of its divisors is an integer number (70419579).

Almost surely, 2^140839157 is an apocalyptic number.

It is an amenable number.

140839157 is a deficient number, since it is larger than the sum of its proper divisors (1).

140839157 is an equidigital number, since it uses as much as digits as its factorization.

140839157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 140839157 is about 11867.5674424037. The cubic root of 140839157 is about 520.2848008419.

The spelling of 140839157 in words is "one hundred forty million, eight hundred thirty-nine thousand, one hundred fifty-seven".