140057840 has 80 divisors (see below), whose sum is σ = 353602368. Its totient is φ = 51283968.

The previous prime is 140057821. The next prime is 140057851. The reversal of 140057840 is 48750041.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141989 + ... + 142971.

Almost surely, 2^140057840 is an apocalyptic number.

140057840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140057840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176801184).

140057840 is an abundant number, since it is smaller than the sum of its proper divisors (213544528).

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

140057840 is a wasteful number, since it uses less digits than its factorization.

140057840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 140057840 is about 11834.6034999065. The cubic root of 140057840 is about 519.3209084013.

The spelling of 140057840 in words is "one hundred forty million, fifty-seven thousand, eight hundred forty".