124020500213 has 4 divisors (see below), whose sum is σ = 124021224288. Its totient is φ = 124019776140.

The previous prime is 124020500141. The next prime is 124020500237. The reversal of 124020500213 is 312005020421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 312005020421 = 387913 ⋅804317.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124020500213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124020503213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55070 + ... + 501072.

It is an arithmetic number, because the mean of its divisors is an integer number (31005306072).

Almost surely, 2^124020500213 is an apocalyptic number.

It is an amenable number.

124020500213 is a deficient number, since it is larger than the sum of its proper divisors (724075).

124020500213 is an equidigital number, since it uses as much as digits as its factorization.

124020500213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724074.

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

Adding to 124020500213 its reverse (312005020421), we get a palindrome (436025520634).

The spelling of 124020500213 in words is "one hundred twenty-four billion, twenty million, five hundred thousand, two hundred thirteen".