121045417 has 2 divisors, whose sum is σ = 121045418. Its totient is φ = 121045416.

The previous prime is 121045381. The next prime is 121045433. The reversal of 121045417 is 714540121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120758121 + 287296 = 10989^2 + 536^2 .

It is a cyclic number.

It is not a de Polignac number, because 121045417 - 2²³ = 112656809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121045391 and 121045400.

It is not a weakly prime, because it can be changed into another prime (121045517) 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, 60522708 + 60522709.

It is an arithmetic number, because the mean of its divisors is an integer number (60522709).

Almost surely, 2^121045417 is an apocalyptic number.

It is an amenable number.

121045417 is a deficient number, since it is larger than the sum of its proper divisors (1).

121045417 is an equidigital number, since it uses as much as digits as its factorization.

121045417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 121045417 is about 11002.0642154098. The cubic root of 121045417 is about 494.6706199044.

Adding to 121045417 its reverse (714540121), we get a palindrome (835585538).

The spelling of 121045417 in words is "one hundred twenty-one million, forty-five thousand, four hundred seventeen".