121412519 has 2 divisors, whose sum is σ = 121412520. Its totient is φ = 121412518.

The previous prime is 121412491. The next prime is 121412549. The reversal of 121412519 is 915214121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121412519 is a prime.

It is a super-2 number, since 2×121412519² = 29481999539850722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121412549) 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, 60706259 + 60706260.

It is an arithmetic number, because the mean of its divisors is an integer number (60706260).

Almost surely, 2^121412519 is an apocalyptic number.

121412519 is a deficient number, since it is larger than the sum of its proper divisors (1).

121412519 is an equidigital number, since it uses as much as digits as its factorization.

121412519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 26.

The square root of 121412519 is about 11018.7349092353. The cubic root of 121412519 is about 495.1701880537.

The spelling of 121412519 in words is "one hundred twenty-one million, four hundred twelve thousand, five hundred nineteen".