121340422442 has 16 divisors (see below), whose sum is σ = 188437725000. Its totient is φ = 58531200000.

The previous prime is 121340422439. The next prime is 121340422457. The reversal of 121340422442 is 244224043121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 61187464321 + 60152958121 = 247361^2 + 245261^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765059 + ... + 909942.

Almost surely, 2^121340422442 is an apocalyptic number.

121340422442 is a deficient number, since it is larger than the sum of its proper divisors (67097302558).

121340422442 is a wasteful number, since it uses less digits than its factorization.

121340422442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676281.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 121340422442 its reverse (244224043121), we get a palindrome (365564465563).

The spelling of 121340422442 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twenty-two thousand, four hundred forty-two".