121123242 has 32 divisors (see below), whose sum is σ = 269976000. Its totient is φ = 40252464.

The previous prime is 121123241. The next prime is 121123273. The reversal of 121123242 is 242321121.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (121123241) by changing a digit.

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, 15633 + ... + 22059.

It is an arithmetic number, because the mean of its divisors is an integer number (8436750).

Almost surely, 2^121123242 is an apocalyptic number.

121123242 is an abundant number, since it is smaller than the sum of its proper divisors (148852758).

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

121123242 is a wasteful number, since it uses less digits than its factorization.

121123242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6787 (or 6781 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 121123242 is about 11005.6004833903. The cubic root of 121123242 is about 494.7766117828.

Adding to 121123242 its reverse (242321121), we get a palindrome (363444363).

The spelling of 121123242 in words is "one hundred twenty-one million, one hundred twenty-three thousand, two hundred forty-two".