140021375 has 32 divisors (see below), whose sum is σ = 189571200. Its totient is φ = 102643200.

The previous prime is 140021369. The next prime is 140021381. The reversal of 140021375 is 573120041.

It is an interprime number because it is at equal distance from previous prime (140021369) and next prime (140021381).

It is not a de Polignac number, because 140021375 - 2⁴ = 140021359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140021375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323159 + ... + 323591.

It is an arithmetic number, because the mean of its divisors is an integer number (5924100).

Almost surely, 2^140021375 is an apocalyptic number.

140021375 is a deficient number, since it is larger than the sum of its proper divisors (49549825).

140021375 is a wasteful number, since it uses less digits than its factorization.

140021375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 140021375 is about 11833.0627903345. The cubic root of 140021375 is about 519.2758349264.

The spelling of 140021375 in words is "one hundred forty million, twenty-one thousand, three hundred seventy-five".