121419997 has 2 divisors, whose sum is σ = 121419998. Its totient is φ = 121419996.

The previous prime is 121419973. The next prime is 121420007. The reversal of 121419997 is 799914121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119661721 + 1758276 = 10939^2 + 1326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121419997 is a prime.

It is equal to p_6917875 and since 121419997 and 6917875 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121419197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60709998 + 60709999.

It is an arithmetic number, because the mean of its divisors is an integer number (60709999).

Almost surely, 2^121419997 is an apocalyptic number.

It is an amenable number.

121419997 is a deficient number, since it is larger than the sum of its proper divisors (1).

121419997 is an equidigital number, since it uses as much as digits as its factorization.

121419997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 43.

The square root of 121419997 is about 11019.0742351615. The cubic root of 121419997 is about 495.1803539649.

The spelling of 121419997 in words is "one hundred twenty-one million, four hundred nineteen thousand, nine hundred ninety-seven".