121330242 has 48 divisors (see below), whose sum is σ = 287527968. Its totient is φ = 36671040.

The previous prime is 121330217. The next prime is 121330277. The reversal of 121330242 is 242033121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126838 + ... + 127790.

It is an arithmetic number, because the mean of its divisors is an integer number (5990166).

Almost surely, 2^121330242 is an apocalyptic number.

121330242 is an abundant number, since it is smaller than the sum of its proper divisors (166197726).

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

121330242 is a wasteful number, since it uses less digits than its factorization.

121330242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 121330242 is about 11015.0007716750. Note that the first 3 decimals coincide. The cubic root of 121330242 is about 495.0583096293.

Adding to 121330242 its reverse (242033121), we get a palindrome (363363363).

The spelling of 121330242 in words is "one hundred twenty-one million, three hundred thirty thousand, two hundred forty-two".