123420052400 has 60 divisors (see below), whose sum is σ = 297747268104. Its totient is φ = 49163136000.

The previous prime is 123420052381. The next prime is 123420052409. The reversal of 123420052400 is 4250024321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123420052409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 543746 + ... + 736545.

Almost surely, 2^123420052400 is an apocalyptic number.

123420052400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123420052400 is an abundant number, since it is smaller than the sum of its proper divisors (174327215704).

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

123420052400 is a wasteful number, since it uses less digits than its factorization.

123420052400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280550 (or 1280539 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 123420052400 its reverse (4250024321), we get a palindrome (127670076721).

The spelling of 123420052400 in words is "one hundred twenty-three billion, four hundred twenty million, fifty-two thousand, four hundred".