121742233 has 2 divisors, whose sum is σ = 121742234. Its totient is φ = 121742232.

The previous prime is 121742227. The next prime is 121742237. The reversal of 121742233 is 332247121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113465104 + 8277129 = 10652^2 + 2877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121742233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121742198 and 121742207.

It is not a weakly prime, because it can be changed into another prime (121742237) by changing a digit.

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 as a sum of consecutive naturals, namely, 60871116 + 60871117.

It is an arithmetic number, because the mean of its divisors is an integer number (60871117).

Almost surely, 2^121742233 is an apocalyptic number.

It is an amenable number.

121742233 is a deficient number, since it is larger than the sum of its proper divisors (1).

121742233 is an equidigital number, since it uses as much as digits as its factorization.

121742233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 25.

The square root of 121742233 is about 11033.6862833778. The cubic root of 121742233 is about 495.6180193467.

Adding to 121742233 its reverse (332247121), we get a palindrome (453989354).

The spelling of 121742233 in words is "one hundred twenty-one million, seven hundred forty-two thousand, two hundred thirty-three".