125982742 has 8 divisors (see below), whose sum is σ = 189074736. Its totient is φ = 62957832.

The previous prime is 125982739. The next prime is 125982761. The reversal of 125982742 is 247289521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 125982695 and 125982704.

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 3 ways as a sum of consecutive naturals, for example, 11778 + ... + 19765.

It is an arithmetic number, because the mean of its divisors is an integer number (23634342).

Almost surely, 2^125982742 is an apocalyptic number.

125982742 is a deficient number, since it is larger than the sum of its proper divisors (63091994).

125982742 is a wasteful number, since it uses less digits than its factorization.

125982742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33542.

The product of its digits is 80640, while the sum is 40.

The square root of 125982742 is about 11224.2034015782. The cubic root of 125982742 is about 501.3069036959.

The spelling of 125982742 in words is "one hundred twenty-five million, nine hundred eighty-two thousand, seven hundred forty-two".