121423200 has 72 divisors (see below), whose sum is σ = 395240328. Its totient is φ = 32378880.

The previous prime is 121423189. The next prime is 121423207. The reversal of 121423200 is 2324121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121423200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121423207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22897 + ... + 27696.

It is an arithmetic number, because the mean of its divisors is an integer number (5489449).

Almost surely, 2^121423200 is an apocalyptic number.

121423200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121423200 is an abundant number, since it is smaller than the sum of its proper divisors (273817128).

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

121423200 is a wasteful number, since it uses less digits than its factorization.

121423200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50616 (or 50603 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 121423200 is about 11019.2195730914. The cubic root of 121423200 is about 495.1847081316.

Adding to 121423200 its reverse (2324121), we get a palindrome (123747321).

The spelling of 121423200 in words is "one hundred twenty-one million, four hundred twenty-three thousand, two hundred".