140915640 has 64 divisors (see below), whose sum is σ = 437335200. Its totient is φ = 36280832.

The previous prime is 140915629. The next prime is 140915651. The reversal of 140915640 is 46519041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140915629) and next prime (140915651).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 140915598 and 140915607.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16767 + ... + 23726.

Almost surely, 2^140915640 is an apocalyptic number.

140915640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140915640 is an abundant number, since it is smaller than the sum of its proper divisors (296419560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140915640 is a wasteful number, since it uses less digits than its factorization.

140915640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40536 (or 40532 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 140915640 is about 11870.7893587579. The cubic root of 140915640 is about 520.3789643833.

The spelling of 140915640 in words is "one hundred forty million, nine hundred fifteen thousand, six hundred forty".