121421023242 has 16 divisors (see below), whose sum is σ = 242854886880. Its totient is φ = 40471534352.

The previous prime is 121421023237. The next prime is 121421023253. The reversal of 121421023242 is 242320124121.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 409833 + ... + 640940.

It is an arithmetic number, because the mean of its divisors is an integer number (15178430430).

Almost surely, 2^121421023242 is an apocalyptic number.

121421023242 is an abundant number, since it is smaller than the sum of its proper divisors (121433863638).

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

121421023242 is a wasteful number, since it uses less digits than its factorization.

121421023242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070037.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 121421023242 its reverse (242320124121), we get a palindrome (363741147363).

The spelling of 121421023242 in words is "one hundred twenty-one billion, four hundred twenty-one million, twenty-three thousand, two hundred forty-two".