140066840 has 32 divisors (see below), whose sum is σ = 315917280. Its totient is φ = 55890432.

The previous prime is 140066837. The next prime is 140066851. The reversal of 140066840 is 48660041.

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, 13277 + ... + 21363.

It is an arithmetic number, because the mean of its divisors is an integer number (9872415).

Almost surely, 2^140066840 is an apocalyptic number.

140066840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140066840 is an abundant number, since it is smaller than the sum of its proper divisors (175850440).

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

140066840 is a wasteful number, since it uses less digits than its factorization.

140066840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531 (or 8527 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 140066840 is about 11834.9837346741. The cubic root of 140066840 is about 519.3320318726.

The spelling of 140066840 in words is "one hundred forty million, sixty-six thousand, eight hundred forty".