125135921984340 has 96 divisors (see below), whose sum is σ = 361510416852480. Its totient is φ = 32325534498816.

The previous prime is 125135921984329. The next prime is 125135921984341. The reversal of 125135921984340 is 43489129531521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125135921984341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248805229 + ... + 249307668.

It is an arithmetic number, because the mean of its divisors is an integer number (3765733508880).

Almost surely, 2^{125135921984340} is an apocalyptic number.

125135921984340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125135921984340 is an abundant number, since it is smaller than the sum of its proper divisors (236374494868140).

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

125135921984340 is a wasteful number, since it uses less digits than its factorization.

125135921984340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498113041 (or 498113039 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 125135921984340 in words is "one hundred twenty-five trillion, one hundred thirty-five billion, nine hundred twenty-one million, nine hundred eighty-four thousand, three hundred forty".