122421400 has 24 divisors (see below), whose sum is σ = 284630220. Its totient is φ = 48968480.

The previous prime is 122421391. The next prime is 122421407. The reversal of 122421400 is 4124221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122421407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 305854 + ... + 306253.

Almost surely, 2^122421400 is an apocalyptic number.

122421400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122421400 is an abundant number, since it is smaller than the sum of its proper divisors (162208820).

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

122421400 is a wasteful number, since it uses less digits than its factorization.

122421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612123 (or 612114 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 122421400 is about 11064.4204547730. The cubic root of 122421400 is about 496.5379504193.

Adding to 122421400 its reverse (4124221), we get a palindrome (126545621).

The spelling of 122421400 in words is "one hundred twenty-two million, four hundred twenty-one thousand, four hundred".