121457909400 has 96 divisors (see below), whose sum is σ = 386695793040. Its totient is φ = 31513397760.

The previous prime is 121457909381. The next prime is 121457909401. The reversal of 121457909400 is 4909754121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121457909401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2713339 + ... + 2757738.

Almost surely, 2^121457909400 is an apocalyptic number.

121457909400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121457909400 is an abundant number, since it is smaller than the sum of its proper divisors (265237883640).

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

121457909400 is a wasteful number, since it uses less digits than its factorization.

121457909400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5471133 (or 5471124 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 121457909400 in words is "one hundred twenty-one billion, four hundred fifty-seven million, nine hundred nine thousand, four hundred".