121458900 has 72 divisors (see below), whose sum is σ = 353039904. Its totient is φ = 32240000.

The previous prime is 121458893. The next prime is 121458913. The reversal of 121458900 is 9854121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74494 + ... + 76106.

It is an arithmetic number, because the mean of its divisors is an integer number (4903332).

Almost surely, 2^121458900 is an apocalyptic number.

121458900 is a gapful number since it is divisible by the number (10) 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 121458900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176519952).

121458900 is an abundant number, since it is smaller than the sum of its proper divisors (231581004).

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

121458900 is a wasteful number, since it uses less digits than its factorization.

121458900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 121458900 is about 11020.8393509750. The cubic root of 121458900 is about 495.2332336243.

The spelling of 121458900 in words is "one hundred twenty-one million, four hundred fifty-eight thousand, nine hundred".