140408920 has 32 divisors (see below), whose sum is σ = 326113920. Its totient is φ = 54351360.

The previous prime is 140408897. The next prime is 140408953. The reversal of 140408920 is 29804041.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 55377 + ... + 57856.

It is an arithmetic number, because the mean of its divisors is an integer number (10191060).

Almost surely, 2^140408920 is an apocalyptic number.

140408920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140408920 is an abundant number, since it is smaller than the sum of its proper divisors (185705000).

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

140408920 is a wasteful number, since it uses less digits than its factorization.

140408920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113275 (or 113271 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 140408920 is about 11849.4269903654. The cubic root of 140408920 is about 519.7544698843.

It can be divided in two parts, 140 and 408920, that added together give a triangular number (409060 = T₉₀₄).

The spelling of 140408920 in words is "one hundred forty million, four hundred eight thousand, nine hundred twenty".