125784749442 has 32 divisors (see below), whose sum is σ = 277004323584. Its totient is φ = 37760358800.

The previous prime is 125784749423. The next prime is 125784749491. The reversal of 125784749442 is 244947487521.

It is a super-2 number, since 2×125784749442² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8898684 + ... + 8912807.

It is an arithmetic number, because the mean of its divisors is an integer number (8656385112).

Almost surely, 2^125784749442 is an apocalyptic number.

125784749442 is an abundant number, since it is smaller than the sum of its proper divisors (151219574142).

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

125784749442 is a wasteful number, since it uses less digits than its factorization.

125784749442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17811614.

The product of its digits is 18063360, while the sum is 57.

The spelling of 125784749442 in words is "one hundred twenty-five billion, seven hundred eighty-four million, seven hundred forty-nine thousand, four hundred forty-two".