124420128 has 48 divisors (see below), whose sum is σ = 373262400. Its totient is φ = 35548416.

The previous prime is 124420103. The next prime is 124420141. The reversal of 124420128 is 821024421.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 124420098 and 124420107.

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, 91903 + ... + 93246.

It is an arithmetic number, because the mean of its divisors is an integer number (7776300).

Almost surely, 2^124420128 is an apocalyptic number.

It is an amenable number.

124420128 is an abundant number, since it is smaller than the sum of its proper divisors (248842272).

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

124420128 is a wasteful number, since it uses less digits than its factorization.

124420128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185169 (or 185161 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 124420128 is about 11154.3770780802. The cubic root of 124420128 is about 499.2256386815.

Adding to 124420128 its reverse (821024421), we get a palindrome (945444549).

The spelling of 124420128 in words is "one hundred twenty-four million, four hundred twenty thousand, one hundred twenty-eight".