124899013 has 8 divisors (see below), whose sum is σ = 129414168. Its totient is φ = 120443904.

The previous prime is 124899001. The next prime is 124899029. The reversal of 124899013 is 310998421.

124899013 = 7902² + 7903².

It can be written as a sum of positive squares in 4 ways, for example, as 38464804 + 86434209 = 6202^2 + 9297^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124899013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124899113) 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, 10756 + ... + 19117.

It is an arithmetic number, because the mean of its divisors is an integer number (16176771).

Almost surely, 2^124899013 is an apocalyptic number.

124899013 is the 7903-rd centered square number.

It is an amenable number.

124899013 is a deficient number, since it is larger than the sum of its proper divisors (4515155).

124899013 is a wasteful number, since it uses less digits than its factorization.

124899013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30023.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 124899013 is about 11175.8226990231. The cubic root of 124899013 is about 499.8653143895.

The spelling of 124899013 in words is "one hundred twenty-four million, eight hundred ninety-nine thousand, thirteen".