121424442 has 8 divisors (see below), whose sum is σ = 242848896. Its totient is φ = 40474812.

The previous prime is 121424441. The next prime is 121424447. The reversal of 121424442 is 244424121.

It is a sphenic number, since it is the product of 3 distinct primes.

121424442 is an admirable number.

It is a super-2 number, since 2×121424442² = 29487790230022728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121424441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10118698 + ... + 10118709.

It is an arithmetic number, because the mean of its divisors is an integer number (30356112).

Almost surely, 2^121424442 is an apocalyptic number.

121424442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121424442 is a wasteful number, since it uses less digits than its factorization.

121424442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20237412.

The product of its digits is 2048, while the sum is 24.

The square root of 121424442 is about 11019.2759290255. The cubic root of 121424442 is about 495.1863964891.

Adding to 121424442 its reverse (244424121), we get a palindrome (365848563).

The spelling of 121424442 in words is "one hundred twenty-one million, four hundred twenty-four thousand, four hundred forty-two".