121457400 has 192 divisors, whose sum is σ = 396403200. Its totient is φ = 30735360.

The previous prime is 121457393. The next prime is 121457417. The reversal of 121457400 is 4754121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1663764 + ... + 1663836.

It is an arithmetic number, because the mean of its divisors is an integer number (2064600).

Almost surely, 2^121457400 is an apocalyptic number.

121457400 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 121457400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198201600).

121457400 is an abundant number, since it is smaller than the sum of its proper divisors (274945800).

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

121457400 is a wasteful number, since it uses less digits than its factorization.

121457400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 121457400 is about 11020.7712978720. The cubic root of 121457400 is about 495.2311949295.

The spelling of 121457400 in words is "one hundred twenty-one million, four hundred fifty-seven thousand, four hundred".