125343742 has 16 divisors (see below), whose sum is σ = 195116400. Its totient is φ = 60318720.

The previous prime is 125343731. The next prime is 125343761. The reversal of 125343742 is 247343521.

It is a happy number.

It is a super-2 number, since 2×125343742² = 31422107317125128, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 15934 + ... + 22462.

It is an arithmetic number, because the mean of its divisors is an integer number (12194775).

Almost surely, 2^125343742 is an apocalyptic number.

125343742 is a deficient number, since it is larger than the sum of its proper divisors (69772658).

125343742 is a wasteful number, since it uses less digits than its factorization.

125343742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6891.

The product of its digits is 20160, while the sum is 31.

The square root of 125343742 is about 11195.7019431566. The cubic root of 125343742 is about 500.4579031880.

The spelling of 125343742 in words is "one hundred twenty-five million, three hundred forty-three thousand, seven hundred forty-two".