124985899 has 2 divisors, whose sum is σ = 124985900. Its totient is φ = 124985898.

The previous prime is 124985897. The next prime is 124985923. The reversal of 124985899 is 998589421.

It is a weak prime.

It is an emirp because it is prime and its reverse (998589421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124985899 - 2¹ = 124985897 is a prime.

Together with 124985897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (124985897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62492949 + 62492950.

It is an arithmetic number, because the mean of its divisors is an integer number (62492950).

Almost surely, 2^124985899 is an apocalyptic number.

124985899 is a deficient number, since it is larger than the sum of its proper divisors (1).

124985899 is an equidigital number, since it uses as much as digits as its factorization.

124985899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 55.

The square root of 124985899 is about 11179.7092538223. The cubic root of 124985899 is about 499.9811979596.

The spelling of 124985899 in words is "one hundred twenty-four million, nine hundred eighty-five thousand, eight hundred ninety-nine".