121234400 has 72 divisors (see below), whose sum is σ = 338259600. Its totient is φ = 41564160.

The previous prime is 121234387. The next prime is 121234409. The reversal of 121234400 is 4432121.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121234409) 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, 5225 + ... + 16424.

It is an arithmetic number, because the mean of its divisors is an integer number (4698050).

Almost surely, 2^121234400 is an apocalyptic number.

121234400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121234400 is an abundant number, since it is smaller than the sum of its proper divisors (217025200).

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

121234400 is a wasteful number, since it uses less digits than its factorization.

121234400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21676 (or 21663 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 121234400 is about 11010.6493904765. The cubic root of 121234400 is about 494.9279220290.

Adding to 121234400 its reverse (4432121), we get a palindrome (125666521).

The spelling of 121234400 in words is "one hundred twenty-one million, two hundred thirty-four thousand, four hundred".