125531241420 has 96 divisors (see below), whose sum is σ = 380486699712. Its totient is φ = 30739857408.

The previous prime is 125531241391. The next prime is 125531241421. The reversal of 125531241420 is 24142135521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (125531241421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266397 + ... + 567476.

It is an arithmetic number, because the mean of its divisors is an integer number (3963403122).

Almost surely, 2^125531241420 is an apocalyptic number.

125531241420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125531241420 is an abundant number, since it is smaller than the sum of its proper divisors (254955458292).

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

125531241420 is a wasteful number, since it uses less digits than its factorization.

125531241420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834091 (or 834089 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 125531241420 its reverse (24142135521), we get a palindrome (149673376941).

The spelling of 125531241420 in words is "one hundred twenty-five billion, five hundred thirty-one million, two hundred forty-one thousand, four hundred twenty".