140406057 has 12 divisors (see below), whose sum is σ = 221246064. Its totient is φ = 85094520.

The previous prime is 140406041. The next prime is 140406073. The reversal of 140406057 is 750604041.

140406057 is a `hidden beast` number, since 14 + 0 + 40 + 605 + 7 = 666.

140406057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (140406041) and next prime (140406073).

It is not a de Polignac number, because 140406057 - 2⁴ = 140406041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140406057.

It is not an unprimeable number, because it can be changed into a prime (140406857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 709023 + ... + 709220.

It is an arithmetic number, because the mean of its divisors is an integer number (18437172).

Almost surely, 2^140406057 is an apocalyptic number.

It is an amenable number.

140406057 is a deficient number, since it is larger than the sum of its proper divisors (80840007).

140406057 is a wasteful number, since it uses less digits than its factorization.

140406057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418260 (or 1418257 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 140406057 is about 11849.3061822201. The cubic root of 140406057 is about 519.7509371858.

The spelling of 140406057 in words is "one hundred forty million, four hundred six thousand, fifty-seven".