121143400 has 48 divisors (see below), whose sum is σ = 321899040. Its totient is φ = 41534400.

The previous prime is 121143391. The next prime is 121143401. The reversal of 121143400 is 4341121.

It is a super-3 number, since 3×121143400³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121143401) 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, 41866 + ... + 44665.

It is an arithmetic number, because the mean of its divisors is an integer number (6706230).

Almost surely, 2^121143400 is an apocalyptic number.

121143400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121143400 is an abundant number, since it is smaller than the sum of its proper divisors (200755640).

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

121143400 is a wasteful number, since it uses less digits than its factorization.

121143400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86554 (or 86545 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121143400 is about 11006.5162517483. The cubic root of 121143400 is about 494.8040580806.

Adding to 121143400 its reverse (4341121), we get a palindrome (125484521).

The spelling of 121143400 in words is "one hundred twenty-one million, one hundred forty-three thousand, four hundred".