140091520 has 64 divisors (see below), whose sum is σ = 339733440. Its totient is φ = 55229440.

The previous prime is 140091517. The next prime is 140091529. The reversal of 140091520 is 25190041.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 140091491 and 140091500.

It is not an unprimeable number, because it can be changed into a prime (140091529) 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, 43899 + ... + 46981.

It is an arithmetic number, because the mean of its divisors is an integer number (5308335).

Almost surely, 2^140091520 is an apocalyptic number.

140091520 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 140091520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169866720).

140091520 is an abundant number, since it is smaller than the sum of its proper divisors (199641920).

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

140091520 is an equidigital number, since it uses as much as digits as its factorization.

140091520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173 (or 3161 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 140091520 is about 11836.0263602275. The cubic root of 140091520 is about 519.3625324579.

The spelling of 140091520 in words is "one hundred forty million, ninety-one thousand, five hundred twenty".