124021420 has 24 divisors (see below), whose sum is σ = 260697024. Its totient is φ = 49560576.

The previous prime is 124021393. The next prime is 124021439. The reversal of 124021420 is 24120421.

It is a junction number, because it is equal to n+sod(n) for n = 124021394 and 124021403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24204 + ... + 28876.

It is an arithmetic number, because the mean of its divisors is an integer number (10862376).

Almost surely, 2^124021420 is an apocalyptic number.

124021420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124021420 is an abundant number, since it is smaller than the sum of its proper divisors (136675604).

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

124021420 is a wasteful number, since it uses less digits than its factorization.

124021420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6009 (or 6007 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 124021420 is about 11136.4904705208. The cubic root of 124021420 is about 498.6918069134.

Adding to 124021420 its reverse (24120421), we get a palindrome (148141841).

Subtracting from 124021420 its reverse (24120421), we obtain a palindrome (99900999).

The spelling of 124021420 in words is "one hundred twenty-four million, twenty-one thousand, four hundred twenty".