140643772 has 12 divisors (see below), whose sum is σ = 246244320. Its totient is φ = 70288256.

The previous prime is 140643751. The next prime is 140643773. The reversal of 140643772 is 277346041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140643773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2604 + ... + 16972.

It is an arithmetic number, because the mean of its divisors is an integer number (20520360).

Almost surely, 2^140643772 is an apocalyptic number.

It is an amenable number.

140643772 is a deficient number, since it is larger than the sum of its proper divisors (105600548).

140643772 is a wasteful number, since it uses less digits than its factorization.

140643772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16820 (or 16818 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 140643772 is about 11859.3326962355. The cubic root of 140643772 is about 520.0440938940.

The spelling of 140643772 in words is "one hundred forty million, six hundred forty-three thousand, seven hundred seventy-two".