121710242 has 16 divisors (see below), whose sum is σ = 198531000. Its totient is φ = 55726848.

The previous prime is 121710241. The next prime is 121710269. The reversal of 121710242 is 242017121.

It can be written as a sum of positive squares in 4 ways, for example, as 116229961 + 5480281 = 10781^2 + 2341^2 .

It is not an unprimeable number, because it can be changed into a prime (121710241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47117 + ... + 49632.

Almost surely, 2^121710242 is an apocalyptic number.

121710242 is a deficient number, since it is larger than the sum of its proper divisors (76820758).

121710242 is a wasteful number, since it uses less digits than its factorization.

121710242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96805.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 121710242 is about 11032.2364913013. The cubic root of 121710242 is about 495.5746032846.

Adding to 121710242 its reverse (242017121), we get a palindrome (363727363).

The spelling of 121710242 in words is "one hundred twenty-one million, seven hundred ten thousand, two hundred forty-two".