124423122420 has 36 divisors (see below), whose sum is σ = 377416805220. Its totient is φ = 33179499264.

The previous prime is 124423122409. The next prime is 124423122433. The reversal of 124423122420 is 24221324421.

It is a happy number.

124423122420 is a `hidden beast` number, since 1 + 2 + 4 + 4 + 231 + 2 + 2 + 420 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 97910164836 + 26512957584 = 312906^2 + 162828^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×124423122420² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345619605 + ... + 345619964.

It is an arithmetic number, because the mean of its divisors is an integer number (10483800145).

Almost surely, 2^124423122420 is an apocalyptic number.

124423122420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124423122420 is an abundant number, since it is smaller than the sum of its proper divisors (252993682800).

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

124423122420 is a wasteful number, since it uses less digits than its factorization.

124423122420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691239584 (or 691239579 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 124423122420 its reverse (24221324421), we get a palindrome (148644446841).

The spelling of 124423122420 in words is "one hundred twenty-four billion, four hundred twenty-three million, one hundred twenty-two thousand, four hundred twenty".