124997855 has 16 divisors (see below), whose sum is σ = 159356160. Its totient is φ = 93798912.

The previous prime is 124997837. The next prime is 124997857. The reversal of 124997855 is 558799421.

It is a cyclic number.

It is not a de Polignac number, because 124997855 - 2¹⁰ = 124996831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124997857) by changing a digit.

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, 24626 + ... + 29264.

It is an arithmetic number, because the mean of its divisors is an integer number (9959760).

Almost surely, 2^124997855 is an apocalyptic number.

124997855 is a deficient number, since it is larger than the sum of its proper divisors (34358305).

124997855 is a wasteful number, since it uses less digits than its factorization.

124997855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4978.

The product of its digits is 907200, while the sum is 50.

The square root of 124997855 is about 11180.2439597712. The cubic root of 124997855 is about 499.9971399836.

The spelling of 124997855 in words is "one hundred twenty-four million, nine hundred ninety-seven thousand, eight hundred fifty-five".