123426419 has 2 divisors, whose sum is σ = 123426420. Its totient is φ = 123426418.

The previous prime is 123426403. The next prime is 123426421. The reversal of 123426419 is 914624321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123426419 - 2⁴ = 123426403 is a prime.

It is a super-2 number, since 2×123426419² = 30468161814327122, which contains 22 as substring.

Together with 123426421, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_7025585 and since 123426419 and 7025585 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (123426449) 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, 61713209 + 61713210.

It is an arithmetic number, because the mean of its divisors is an integer number (61713210).

Almost surely, 2^123426419 is an apocalyptic number.

123426419 is a deficient number, since it is larger than the sum of its proper divisors (1).

123426419 is an equidigital number, since it uses as much as digits as its factorization.

123426419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 123426419 is about 11109.7443264910. The cubic root of 123426419 is about 497.8930257908.

The spelling of 123426419 in words is "one hundred twenty-three million, four hundred twenty-six thousand, four hundred nineteen".