124022020421 has 24 divisors (see below), whose sum is σ = 142685802720. Its totient is φ = 107442593856.

The previous prime is 124022020393. The next prime is 124022020453. The reversal of 124022020421 is 124020220421.

It is not a de Polignac number, because 124022020421 - 2¹⁸ = 124021758277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124022020393 and 124022020402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124022020481) 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 23 ways as a sum of consecutive naturals, for example, 163091 + ... + 524063.

It is an arithmetic number, because the mean of its divisors is an integer number (5945241780).

Almost surely, 2^124022020421 is an apocalyptic number.

It is an amenable number.

124022020421 is a deficient number, since it is larger than the sum of its proper divisors (18663782299).

124022020421 is a wasteful number, since it uses less digits than its factorization.

124022020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361125 (or 361112 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 124022020421 its reverse (124020220421), we get a palindrome (248042240842).

The spelling of 124022020421 in words is "one hundred twenty-four billion, twenty-two million, twenty thousand, four hundred twenty-one".