140429920 has 48 divisors (see below), whose sum is σ = 339873408. Its totient is φ = 54799360.

The previous prime is 140429917. The next prime is 140429921. The reversal of 140429920 is 29924041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140429921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4144 + ... + 17263.

It is an arithmetic number, because the mean of its divisors is an integer number (7080696).

Almost surely, 2^140429920 is an apocalyptic number.

140429920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140429920 is an abundant number, since it is smaller than the sum of its proper divisors (199443488).

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

140429920 is a wasteful number, since it uses less digits than its factorization.

140429920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21463 (or 21455 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 140429920 is about 11850.3130760331. The cubic root of 140429920 is about 519.7803806307.

The spelling of 140429920 in words is "one hundred forty million, four hundred twenty-nine thousand, nine hundred twenty".