124985811 has 4 divisors (see below), whose sum is σ = 166647752. Its totient is φ = 83323872.

The previous prime is 124985807. The next prime is 124985837. The reversal of 124985811 is 118589421.

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

It is not a de Polignac number, because 124985811 - 2² = 124985807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124985811.

It is not an unprimeable number, because it can be changed into a prime (124985851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20830966 + ... + 20830971.

It is an arithmetic number, because the mean of its divisors is an integer number (41661938).

Almost surely, 2^124985811 is an apocalyptic number.

124985811 is a deficient number, since it is larger than the sum of its proper divisors (41661941).

124985811 is an equidigital number, since it uses as much as digits as its factorization.

124985811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41661940.

The product of its digits is 23040, while the sum is 39.

The square root of 124985811 is about 11179.7053181200. The cubic root of 124985811 is about 499.9810806175.

The spelling of 124985811 in words is "one hundred twenty-four million, nine hundred eighty-five thousand, eight hundred eleven".