121424242 has 24 divisors (see below), whose sum is σ = 188154576. Its totient is φ = 58762584.

The previous prime is 121424209. The next prime is 121424243. The reversal of 121424242 is 242424121.

It is not an unprimeable number, because it can be changed into a prime (121424243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 744853 + ... + 745015.

It is an arithmetic number, because the mean of its divisors is an integer number (7839774).

Almost surely, 2^121424242 is an apocalyptic number.

121424242 is a deficient number, since it is larger than the sum of its proper divisors (66730334).

121424242 is a wasteful number, since it uses less digits than its factorization.

121424242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 331 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 121424242 is about 11019.2668540153. The cubic root of 121424242 is about 495.1861246126.

Adding to 121424242 its reverse (242424121), we get a palindrome (363848363).

It can be divided in two parts, 12142 and 4242, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 121424242 in words is "one hundred twenty-one million, four hundred twenty-four thousand, two hundred forty-two".