121310242 has 16 divisors (see below), whose sum is σ = 184476600. Its totient is φ = 59823360.

The previous prime is 121310197. The next prime is 121310251. The reversal of 121310242 is 242013121.

It can be written as a sum of positive squares in 4 ways, for example, as 121242121 + 68121 = 11011^2 + 261^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51384 + ... + 53692.

Almost surely, 2^121310242 is an apocalyptic number.

121310242 is a deficient number, since it is larger than the sum of its proper divisors (63166358).

121310242 is a wasteful number, since it uses less digits than its factorization.

121310242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121310242 is about 11014.0928813952. The cubic root of 121310242 is about 495.0311064355.

Adding to 121310242 its reverse (242013121), we get a palindrome (363323363).

The spelling of 121310242 in words is "one hundred twenty-one million, three hundred ten thousand, two hundred forty-two".