121328419 has 2 divisors, whose sum is σ = 121328420. Its totient is φ = 121328418.

The previous prime is 121328399. The next prime is 121328423. The reversal of 121328419 is 914823121.

It is a strong prime.

It is an emirp because it is prime and its reverse (914823121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121328419 - 2⁵ = 121328387 is a prime.

It is a super-2 number, since 2×121328419² = 29441170514079122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121328719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60664209 + 60664210.

It is an arithmetic number, because the mean of its divisors is an integer number (60664210).

Almost surely, 2^121328419 is an apocalyptic number.

121328419 is a deficient number, since it is larger than the sum of its proper divisors (1).

121328419 is an equidigital number, since it uses as much as digits as its factorization.

121328419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 121328419 is about 11014.9180205756. The cubic root of 121328419 is about 495.0558301820.

The spelling of 121328419 in words is "one hundred twenty-one million, three hundred twenty-eight thousand, four hundred nineteen".