121194240 has 144 divisors (see below), whose sum is σ = 397991328. Its totient is φ = 31408128.

The previous prime is 121194233. The next prime is 121194259. The reversal of 121194240 is 42491121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 121194240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141654 + ... + 142506.

Almost surely, 2^121194240 is an apocalyptic number.

121194240 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 121194240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198995664).

121194240 is an abundant number, since it is smaller than the sum of its proper divisors (276797088).

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

121194240 is an equidigital number, since it uses as much as digits as its factorization.

121194240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914 (or 900 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 121194240 is about 11008.8255504391. The cubic root of 121194240 is about 494.8732661984.

The spelling of 121194240 in words is "one hundred twenty-one million, one hundred ninety-four thousand, two hundred forty".