140581532 has 48 divisors (see below), whose sum is σ = 318743040. Its totient is φ = 52684992.

The previous prime is 140581523. The next prime is 140581541. The reversal of 140581532 is 235185041.

It is an interprime number because it is at equal distance from previous prime (140581523) and next prime (140581541).

It is a junction number, because it is equal to n+sod(n) for n = 140581495 and 140581504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3248 + ... + 17079.

It is an arithmetic number, because the mean of its divisors is an integer number (6640480).

Almost surely, 2^140581532 is an apocalyptic number.

It is an amenable number.

140581532 is an abundant number, since it is smaller than the sum of its proper divisors (178161508).

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

140581532 is a wasteful number, since it uses less digits than its factorization.

140581532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20370 (or 20368 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 140581532 is about 11856.7083121750. The cubic root of 140581532 is about 519.9673697474.

The spelling of 140581532 in words is "one hundred forty million, five hundred eighty-one thousand, five hundred thirty-two".