121434517 has 2 divisors, whose sum is σ = 121434518. Its totient is φ = 121434516.

The previous prime is 121434499. The next prime is 121434527. The reversal of 121434517 is 715434121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76195441 + 45239076 = 8729^2 + 6726^2 .

It is a cyclic number.

It is not a de Polignac number, because 121434517 - 2⁷ = 121434389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121434527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60717258 + 60717259.

It is an arithmetic number, because the mean of its divisors is an integer number (60717259).

Almost surely, 2^121434517 is an apocalyptic number.

It is an amenable number.

121434517 is a deficient number, since it is larger than the sum of its proper divisors (1).

121434517 is an equidigital number, since it uses as much as digits as its factorization.

121434517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 121434517 is about 11019.7330729923. The cubic root of 121434517 is about 495.2000918782.

Adding to 121434517 its reverse (715434121), we get a palindrome (836868638).

The spelling of 121434517 in words is "one hundred twenty-one million, four hundred thirty-four thousand, five hundred seventeen".