124890865 has 16 divisors (see below), whose sum is σ = 163722240. Its totient is φ = 90702720.

The previous prime is 124890859. The next prime is 124890923. The reversal of 124890865 is 568098421.

It is a happy number.

It is not a de Polignac number, because 124890865 - 2¹³ = 124882673 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58741 + ... + 60829.

It is an arithmetic number, because the mean of its divisors is an integer number (10232640).

Almost surely, 2^124890865 is an apocalyptic number.

It is an amenable number.

124890865 is a deficient number, since it is larger than the sum of its proper divisors (38831375).

124890865 is a wasteful number, since it uses less digits than its factorization.

124890865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 124890865 is about 11175.4581561563. The cubic root of 124890865 is about 499.8544442979.

The spelling of 124890865 in words is "one hundred twenty-four million, eight hundred ninety thousand, eight hundred sixty-five".