140570857 has 6 divisors (see below), whose sum is σ = 163521258. Its totient is φ = 120489264.

The previous prime is 140570849. The next prime is 140570861. The reversal of 140570857 is 758075041.

It can be written as a sum of positive squares in only one way, i.e., 140280336 + 290521 = 11844^2 + 539^2 .

It is not a de Polignac number, because 140570857 - 2³ = 140570849 is a prime.

It is a super-3 number, since 3×140570857³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140570867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1434348 + ... + 1434445.

It is an arithmetic number, because the mean of its divisors is an integer number (27253543).

Almost surely, 2^140570857 is an apocalyptic number.

It is an amenable number.

140570857 is a deficient number, since it is larger than the sum of its proper divisors (22950401).

140570857 is an equidigital number, since it uses as much as digits as its factorization.

140570857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868807 (or 2868800 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 140570857 is about 11856.2581365286. The cubic root of 140570857 is about 519.9542082458.

The spelling of 140570857 in words is "one hundred forty million, five hundred seventy thousand, eight hundred fifty-seven".