125942840 has 32 divisors (see below), whose sum is σ = 288722880. Its totient is φ = 49425792.

The previous prime is 125942833. The next prime is 125942879. The reversal of 125942840 is 48249521.

It is a self number, because there is not a number n which added to its sum of digits gives 125942840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27584 + ... + 31823.

It is an arithmetic number, because the mean of its divisors is an integer number (9022590).

Almost surely, 2^125942840 is an apocalyptic number.

125942840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125942840 is an abundant number, since it is smaller than the sum of its proper divisors (162780040).

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

125942840 is a wasteful number, since it uses less digits than its factorization.

125942840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59471 (or 59467 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 125942840 is about 11222.4257627306. The cubic root of 125942840 is about 501.2539724770.

The spelling of 125942840 in words is "one hundred twenty-five million, nine hundred forty-two thousand, eight hundred forty".