125042742 has 24 divisors (see below), whose sum is σ = 295556040. Its totient is φ = 37891680.

The previous prime is 125042717. The next prime is 125042759. The reversal of 125042742 is 247240521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315567 + ... + 315962.

It is an arithmetic number, because the mean of its divisors is an integer number (12314835).

Almost surely, 2^125042742 is an apocalyptic number.

125042742 is an abundant number, since it is smaller than the sum of its proper divisors (170513298).

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

125042742 is a wasteful number, since it uses less digits than its factorization.

125042742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631548 (or 631545 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 125042742 is about 11182.2512044758. The cubic root of 125042742 is about 500.0569828390.

The spelling of 125042742 in words is "one hundred twenty-five million, forty-two thousand, seven hundred forty-two".