140872457 has 4 divisors (see below), whose sum is σ = 153679056. Its totient is φ = 128065860.

The previous prime is 140872439. The next prime is 140872483. The reversal of 140872457 is 754278041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140872457 - 2⁶ = 140872393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140872457.

It is not an unprimeable number, because it can be changed into a prime (140872427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6403283 + ... + 6403304.

It is an arithmetic number, because the mean of its divisors is an integer number (38419764).

Almost surely, 2^140872457 is an apocalyptic number.

It is an amenable number.

140872457 is a deficient number, since it is larger than the sum of its proper divisors (12806599).

140872457 is a wasteful number, since it uses less digits than its factorization.

140872457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12806598.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 140872457 is about 11868.9703428730. The cubic root of 140872457 is about 520.3258029773.

The spelling of 140872457 in words is "one hundred forty million, eight hundred seventy-two thousand, four hundred fifty-seven".