125312440 has 96 divisors (see below), whose sum is σ = 328361040. Its totient is φ = 42859520.

The previous prime is 125312431. The next prime is 125312459. The reversal of 125312440 is 44213521.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81519 + ... + 83041.

Almost surely, 2^125312440 is an apocalyptic number.

125312440 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 125312440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164180520).

125312440 is an abundant number, since it is smaller than the sum of its proper divisors (203048600).

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

125312440 is a wasteful number, since it uses less digits than its factorization.

125312440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 125312440 is about 11194.3039086850. The cubic root of 125312440 is about 500.4162400589.

Adding to 125312440 its reverse (44213521), we get a palindrome (169525961).

The spelling of 125312440 in words is "one hundred twenty-five million, three hundred twelve thousand, four hundred forty".