124323240420 has 120 divisors (see below), whose sum is σ = 391457820600. Its totient is φ = 33029503488.

The previous prime is 124323240409. The next prime is 124323240421. The reversal of 124323240420 is 24042323421.

124323240420 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 232 + 4 + 0 + 420 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2332310436 + 121990929984 = 48294^2 + 349272^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (124323240421) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 293136 + ... + 578424.

It is an arithmetic number, because the mean of its divisors is an integer number (3262148505).

Almost surely, 2^124323240420 is an apocalyptic number.

124323240420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 124323240420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195728910300).

124323240420 is an abundant number, since it is smaller than the sum of its proper divisors (267134580180).

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

124323240420 is a wasteful number, since it uses less digits than its factorization.

124323240420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285579 (or 285568 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 124323240420 its reverse (24042323421), we get a palindrome (148365563841).

The spelling of 124323240420 in words is "one hundred twenty-four billion, three hundred twenty-three million, two hundred forty thousand, four hundred twenty".