140138870 has 16 divisors (see below), whose sum is σ = 265526640. Its totient is φ = 53105184.

The previous prime is 140138857. The next prime is 140138891. The reversal of 140138870 is 78831041.

140138870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368597 + ... + 368976.

It is an arithmetic number, because the mean of its divisors is an integer number (16595415).

Almost surely, 2^140138870 is an apocalyptic number.

140138870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140138870 is a deficient number, since it is larger than the sum of its proper divisors (125387770).

140138870 is a wasteful number, since it uses less digits than its factorization.

140138870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737599.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 140138870 is about 11838.0264402475. The cubic root of 140138870 is about 519.4210395581.

The spelling of 140138870 in words is "one hundred forty million, one hundred thirty-eight thousand, eight hundred seventy".