121055040 has 112 divisors (see below), whose sum is σ = 427085760. Its totient is φ = 32279040.

The previous prime is 121055029. The next prime is 121055057. The reversal of 121055040 is 40550121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1635 + ... + 15645.

Almost surely, 2^121055040 is an apocalyptic number.

121055040 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 121055040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213542880).

121055040 is an abundant number, since it is smaller than the sum of its proper divisors (306030720).

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

121055040 is a wasteful number, since it uses less digits than its factorization.

121055040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14037 (or 14021 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 121055040 is about 11002.5015337422. The cubic root of 121055040 is about 494.6837281777.

The spelling of 121055040 in words is "one hundred twenty-one million, fifty-five thousand, forty".