840251132 has 48 divisors (see below), whose sum is σ = 1725115392. Its totient is φ = 350602560.

The previous prime is 840251123. The next prime is 840251173. The reversal of 840251132 is 231152048.

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, 448157 + ... + 450027.

It is an arithmetic number, because the mean of its divisors is an integer number (35939904).

Almost surely, 2^840251132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840251132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (862557696).

840251132 is an abundant number, since it is smaller than the sum of its proper divisors (884864260).

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

840251132 is a wasteful number, since it uses less digits than its factorization.

840251132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298 (or 2296 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 840251132 is about 28987.0856072148. The cubic root of 840251132 is about 943.6328155773.

The spelling of 840251132 in words is "eight hundred forty million, two hundred fifty-one thousand, one hundred thirty-two".