140020659 has 6 divisors (see below), whose sum is σ = 202252076. Its totient is φ = 93347100.

The previous prime is 140020631. The next prime is 140020663. The reversal of 140020659 is 956020041.

140020659 is a `hidden beast` number, since 1 + 4 + 0 + 0 + 2 + 0 + 659 = 666.

It is not a de Polignac number, because 140020659 - 2⁸ = 140020403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140020609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7778917 + ... + 7778934.

Almost surely, 2^140020659 is an apocalyptic number.

140020659 is a deficient number, since it is larger than the sum of its proper divisors (62231417).

140020659 is a wasteful number, since it uses less digits than its factorization.

140020659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15557857 (or 15557854 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 140020659 is about 11833.0325360830. The cubic root of 140020659 is about 519.2749498183.

The spelling of 140020659 in words is "one hundred forty million, twenty thousand, six hundred fifty-nine".