124140440420 has 48 divisors (see below), whose sum is σ = 270433900800. Its totient is φ = 47831796480.

The previous prime is 124140440383. The next prime is 124140440471. The reversal of 124140440420 is 24044041421.

It is a self number, because there is not a number n which added to its sum of digits gives 124140440420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 893390 + ... + 1022949.

It is an arithmetic number, because the mean of its divisors is an integer number (5634039600).

Almost surely, 2^124140440420 is an apocalyptic number.

124140440420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124140440420 is an abundant number, since it is smaller than the sum of its proper divisors (146293460380).

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

124140440420 is a wasteful number, since it uses less digits than its factorization.

124140440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916468 (or 1916466 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 124140440420 its reverse (24044041421), we get a palindrome (148184481841).

The spelling of 124140440420 in words is "one hundred twenty-four billion, one hundred forty million, four hundred forty thousand, four hundred twenty".