124021223420 has 24 divisors (see below), whose sum is σ = 260455070400. Its totient is φ = 49606489152.

The previous prime is 124021223393. The next prime is 124021223429. The reversal of 124021223420 is 24322120421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124021223429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447326 + ... + 669434.

It is an arithmetic number, because the mean of its divisors is an integer number (10852294600).

Almost surely, 2^124021223420 is an apocalyptic number.

124021223420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124021223420 is an abundant number, since it is smaller than the sum of its proper divisors (136433846980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124021223420 is a wasteful number, since it uses less digits than its factorization.

124021223420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250037 (or 250035 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 124021223420 its reverse (24322120421), we get a palindrome (148343343841).

The spelling of 124021223420 in words is "one hundred twenty-four billion, twenty-one million, two hundred twenty-three thousand, four hundred twenty".