124450013 has 4 divisors (see below), whose sum is σ = 131770620. Its totient is φ = 117129408.

The previous prime is 124450009. The next prime is 124450063. The reversal of 124450013 is 310054421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310054421 = 23 ⋅13480627.

It can be written as a sum of positive squares in 2 ways, for example, as 74011609 + 50438404 = 8603^2 + 7102^2 .

It is a cyclic number.

It is not a de Polignac number, because 124450013 - 2² = 124450009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124450003) 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, 3660278 + ... + 3660311.

It is an arithmetic number, because the mean of its divisors is an integer number (32942655).

Almost surely, 2^124450013 is an apocalyptic number.

It is an amenable number.

124450013 is a deficient number, since it is larger than the sum of its proper divisors (7320607).

124450013 is an equidigital number, since it uses as much as digits as its factorization.

124450013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7320606.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 124450013 is about 11155.7166062965. The cubic root of 124450013 is about 499.2656058586.

The spelling of 124450013 in words is "one hundred twenty-four million, four hundred fifty thousand, thirteen".