121140400 has 30 divisors (see below), whose sum is σ = 291040772. Its totient is φ = 48456000.

The previous prime is 121140391. The next prime is 121140401. The reversal of 121140400 is 4041121.

It is a super-3 number, since 3×121140400³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121140401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151026 + ... + 151825.

Almost surely, 2^121140400 is an apocalyptic number.

121140400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121140400 is an abundant number, since it is smaller than the sum of its proper divisors (169900372).

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

121140400 is a wasteful number, since it uses less digits than its factorization.

121140400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302869 (or 302858 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121140400 is about 11006.3799680004. The cubic root of 121140400 is about 494.7999735977.

Adding to 121140400 its reverse (4041121), we get a palindrome (125181521).

The spelling of 121140400 in words is "one hundred twenty-one million, one hundred forty thousand, four hundred".