121165242 has 64 divisors (see below), whose sum is σ = 290442240. Its totient is φ = 33264000.

The previous prime is 121165241. The next prime is 121165249. The reversal of 121165242 is 242561121.

It is not an unprimeable number, because it can be changed into a prime (121165241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26742 + ... + 30942.

It is an arithmetic number, because the mean of its divisors is an integer number (4538160).

Almost surely, 2^121165242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121165242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145221120).

121165242 is an abundant number, since it is smaller than the sum of its proper divisors (169276998).

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

121165242 is a wasteful number, since it uses less digits than its factorization.

121165242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259.

The product of its digits is 960, while the sum is 24.

The square root of 121165242 is about 11007.5084374258. The cubic root of 121165242 is about 494.8337938064.

The spelling of 121165242 in words is "one hundred twenty-one million, one hundred sixty-five thousand, two hundred forty-two".