121341457 has 2 divisors, whose sum is σ = 121341458. Its totient is φ = 121341456.

The previous prime is 121341419. The next prime is 121341469. The reversal of 121341457 is 754143121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115111441 + 6230016 = 10729^2 + 2496^2 .

It is a cyclic number.

It is not a de Polignac number, because 121341457 - 2¹¹ = 121339409 is a prime.

It is not a weakly prime, because it can be changed into another prime (121341487) 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, 60670728 + 60670729.

It is an arithmetic number, because the mean of its divisors is an integer number (60670729).

Almost surely, 2^121341457 is an apocalyptic number.

It is an amenable number.

121341457 is a deficient number, since it is larger than the sum of its proper divisors (1).

121341457 is an equidigital number, since it uses as much as digits as its factorization.

121341457 is an odious number, because the sum of its binary digits is odd.

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

The square root of 121341457 is about 11015.5098384051. The cubic root of 121341457 is about 495.0735625121.

Adding to 121341457 its reverse (754143121), we get a palindrome (875484578).

The spelling of 121341457 in words is "one hundred twenty-one million, three hundred forty-one thousand, four hundred fifty-seven".