140436040 has 32 divisors (see below), whose sum is σ = 318087360. Its totient is φ = 55800000.

The previous prime is 140436019. The next prime is 140436041. The reversal of 140436040 is 40634041.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (140436041) 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, 5586 + ... + 17665.

It is an arithmetic number, because the mean of its divisors is an integer number (9940230).

Almost surely, 2^140436040 is an apocalyptic number.

140436040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140436040 is an abundant number, since it is smaller than the sum of its proper divisors (177651320).

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

140436040 is a wasteful number, since it uses less digits than its factorization.

140436040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23413 (or 23409 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 140436040 is about 11850.5712942457. The cubic root of 140436040 is about 519.7879312764.

The spelling of 140436040 in words is "one hundred forty million, four hundred thirty-six thousand, forty".