124125745 has 4 divisors (see below), whose sum is σ = 148950900. Its totient is φ = 99300592.

The previous prime is 124125739. The next prime is 124125763. The reversal of 124125745 is 547521421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68757264 + 55368481 = 8292^2 + 7441^2 .

It is a cyclic number.

It is not a de Polignac number, because 124125745 - 2¹¹ = 124123697 is a prime.

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, 12412570 + ... + 12412579.

It is an arithmetic number, because the mean of its divisors is an integer number (37237725).

Almost surely, 2^124125745 is an apocalyptic number.

It is an amenable number.

124125745 is a deficient number, since it is larger than the sum of its proper divisors (24825155).

124125745 is an equidigital number, since it uses as much as digits as its factorization.

124125745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24825154.

The product of its digits is 11200, while the sum is 31.

The square root of 124125745 is about 11141.1734121680. The cubic root of 124125745 is about 498.8315984691.

The spelling of 124125745 in words is "one hundred twenty-four million, one hundred twenty-five thousand, seven hundred forty-five".