140357520 has 120 divisors (see below), whose sum is σ = 474856512. Its totient is φ = 37152000.

The previous prime is 140357509. The next prime is 140357521. The reversal of 140357520 is 25753041.

It is a happy number.

140357520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (140357521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108075 + ... + 109365.

Almost surely, 2^140357520 is an apocalyptic number.

140357520 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 140357520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237428256).

140357520 is an abundant number, since it is smaller than the sum of its proper divisors (334498992).

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

140357520 is a wasteful number, since it uses less digits than its factorization.

140357520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 140357520 is about 11847.2579105884. The cubic root of 140357520 is about 519.6910393455.

The spelling of 140357520 in words is "one hundred forty million, three hundred fifty-seven thousand, five hundred twenty".