140168457 has 36 divisors (see below), whose sum is σ = 239687812. Its totient is φ = 78408000.

The previous prime is 140168443. The next prime is 140168461. The reversal of 140168457 is 754861041.

It is a happy number.

140168457 is a `hidden beast` number, since 1 + 40 + 168 + 457 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 83557881 + 56610576 = 9141^2 + 7524^2 .

It is not a de Polignac number, because 140168457 - 2¹⁵ = 140135689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140168437) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9207 + ... + 19107.

Almost surely, 2^140168457 is an apocalyptic number.

It is an amenable number.

140168457 is a deficient number, since it is larger than the sum of its proper divisors (99519355).

140168457 is a wasteful number, since it uses less digits than its factorization.

140168457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9942 (or 9928 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 140168457 is about 11839.2760336095. The cubic root of 140168457 is about 519.4575914653.

It can be divided in two parts, 140168 and 457, that added together give a square (140625 = 375²).

The spelling of 140168457 in words is "one hundred forty million, one hundred sixty-eight thousand, four hundred fifty-seven".