121479719 has 2 divisors, whose sum is σ = 121479720. Its totient is φ = 121479718.

The previous prime is 121479707. The next prime is 121479727. The reversal of 121479719 is 917974121.

It is a strong prime.

It is an emirp because it is prime and its reverse (917974121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121479719 - 2²⁴ = 104702503 is a prime.

It is a super-2 number, since 2×121479719² = 29514644256637922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121479419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60739859 + 60739860.

It is an arithmetic number, because the mean of its divisors is an integer number (60739860).

Almost surely, 2^121479719 is an apocalyptic number.

121479719 is a deficient number, since it is larger than the sum of its proper divisors (1).

121479719 is an equidigital number, since it uses as much as digits as its factorization.

121479719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 41.

The square root of 121479719 is about 11021.7838392884. The cubic root of 121479719 is about 495.2615276169.

The spelling of 121479719 in words is "one hundred twenty-one million, four hundred seventy-nine thousand, seven hundred nineteen".