140681520 has 240 divisors, whose sum is σ = 547203072. Its totient is φ = 31726080.

The previous prime is 140681473. The next prime is 140681533. The reversal of 140681520 is 25186041.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 518985 + ... + 519255.

Almost surely, 2^140681520 is an apocalyptic number.

140681520 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 140681520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273601536).

140681520 is an abundant number, since it is smaller than the sum of its proper divisors (406521552).

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

140681520 is a wasteful number, since it uses less digits than its factorization.

140681520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 140681520 is about 11860.9240786711. The cubic root of 140681520 is about 520.0906153721.

The spelling of 140681520 in words is "one hundred forty million, six hundred eighty-one thousand, five hundred twenty".