125742669 has 8 divisors (see below), whose sum is σ = 180553632. Its totient is φ = 77380080.

The previous prime is 125742653. The next prime is 125742731. The reversal of 125742669 is 966247521.

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

It is not a de Polignac number, because 125742669 - 2⁴ = 125742653 is a prime.

It is a super-2 number, since 2×125742669² = 31622437614487122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125742669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125742619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1612047 + ... + 1612124.

It is an arithmetic number, because the mean of its divisors is an integer number (22569204).

Almost surely, 2^125742669 is an apocalyptic number.

It is an amenable number.

125742669 is a deficient number, since it is larger than the sum of its proper divisors (54810963).

125742669 is a wasteful number, since it uses less digits than its factorization.

125742669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224187.

The product of its digits is 181440, while the sum is 42.

The square root of 125742669 is about 11213.5038681047. The cubic root of 125742669 is about 500.9882706885.

The spelling of 125742669 in words is "one hundred twenty-five million, seven hundred forty-two thousand, six hundred sixty-nine".