121044140 has 48 divisors (see below), whose sum is σ = 297276672. Its totient is φ = 40533696.

The previous prime is 121044139. The next prime is 121044151. The reversal of 121044140 is 41440121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4034 + ... + 16073.

It is an arithmetic number, because the mean of its divisors is an integer number (6193264).

Almost surely, 2^121044140 is an apocalyptic number.

121044140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121044140 is an abundant number, since it is smaller than the sum of its proper divisors (176232532).

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

121044140 is a wasteful number, since it uses less digits than its factorization.

121044140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20166 (or 20164 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121044140 is about 11002.0061806927. The cubic root of 121044140 is about 494.6688803463.

Adding to 121044140 its reverse (41440121), we get a palindrome (162484261).

The spelling of 121044140 in words is "one hundred twenty-one million, forty-four thousand, one hundred forty".