124212713 has 4 divisors (see below), whose sum is σ = 128495940. Its totient is φ = 119929488.

The previous prime is 124212701. The next prime is 124212721. The reversal of 124212713 is 317212421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 317212421 = 8681 ⋅36541.

It can be written as a sum of positive squares in 2 ways, for example, as 28015849 + 96196864 = 5293^2 + 9808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124212713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (124212733) 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 3 ways as a sum of consecutive naturals, for example, 2141570 + ... + 2141627.

It is an arithmetic number, because the mean of its divisors is an integer number (32123985).

Almost surely, 2^124212713 is an apocalyptic number.

It is an amenable number.

124212713 is a deficient number, since it is larger than the sum of its proper divisors (4283227).

124212713 is an equidigital number, since it uses as much as digits as its factorization.

124212713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4283226.

The product of its digits is 672, while the sum is 23.

The square root of 124212713 is about 11145.0757287692. The cubic root of 124212713 is about 498.9480724489.

The spelling of 124212713 in words is "one hundred twenty-four million, two hundred twelve thousand, seven hundred thirteen".