125312124 has 48 divisors (see below), whose sum is σ = 336204288. Its totient is φ = 35585088.

The previous prime is 125312123. The next prime is 125312147. The reversal of 125312124 is 421213521.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 125312124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125312123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9562 + ... + 18494.

It is an arithmetic number, because the mean of its divisors is an integer number (7004256).

Almost surely, 2^125312124 is an apocalyptic number.

125312124 is a gapful number since it is divisible by the number (14) 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 125312124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168102144).

125312124 is an abundant number, since it is smaller than the sum of its proper divisors (210892164).

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

125312124 is a wasteful number, since it uses less digits than its factorization.

125312124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9114 (or 9112 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 125312124 is about 11194.2897943550. The cubic root of 125312124 is about 500.4158194259.

Adding to 125312124 its reverse (421213521), we get a palindrome (546525645).

The spelling of 125312124 in words is "one hundred twenty-five million, three hundred twelve thousand, one hundred twenty-four".