140971857 has 12 divisors (see below), whose sum is σ = 203534064. Its totient is φ = 86751600.

The previous prime is 140971841. The next prime is 140971879. The reversal of 140971857 is 758179041.

It is not a de Polignac number, because 140971857 - 2⁴ = 140971841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140971057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138519 + ... + 139532.

It is an arithmetic number, because the mean of its divisors is an integer number (16961172).

Almost surely, 2^140971857 is an apocalyptic number.

It is an amenable number.

140971857 is a deficient number, since it is larger than the sum of its proper divisors (62562207).

140971857 is a wasteful number, since it uses less digits than its factorization.

140971857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278080 (or 278067 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 140971857 is about 11873.1569938243. The cubic root of 140971857 is about 520.4481553188.

The spelling of 140971857 in words is "one hundred forty million, nine hundred seventy-one thousand, eight hundred fifty-seven".