123620442624 has 600 divisors, whose sum is σ = 433497968640. Its totient is φ = 34968858624.

The previous prime is 123620442623. The next prime is 123620442637. The reversal of 123620442624 is 426244026321.

123620442624 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 20 + 4 + 4 + 2 + 624 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123620442623) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 258080017 + ... + 258080495.

Almost surely, 2^123620442624 is an apocalyptic number.

123620442624 is a gapful number since it is divisible by the number (14) 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 123620442624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216748984320).

123620442624 is an abundant number, since it is smaller than the sum of its proper divisors (309877526016).

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

123620442624 is an equidigital number, since it uses as much as digits as its factorization.

123620442624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 123620442624 its reverse (426244026321), we get a palindrome (549864468945).

The spelling of 123620442624 in words is "one hundred twenty-three billion, six hundred twenty million, four hundred forty-two thousand, six hundred twenty-four".