423055019 has 2 divisors, whose sum is σ = 423055020. Its totient is φ = 423055018.

The previous prime is 423055001. The next prime is 423055021. The reversal of 423055019 is 910550324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423055019 - 2⁸ = 423054763 is a prime.

It is a super-2 number, since 2×423055019² = 357951098202180722, which contains 22 as substring.

Together with 423055021, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 423054982 and 423055000.

It is not a weakly prime, because it can be changed into another prime (423055079) 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, 211527509 + 211527510.

It is an arithmetic number, because the mean of its divisors is an integer number (211527510).

Almost surely, 2^423055019 is an apocalyptic number.

423055019 is a deficient number, since it is larger than the sum of its proper divisors (1).

423055019 is an equidigital number, since it uses as much as digits as its factorization.

423055019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 423055019 is about 20568.3013153736. The cubic root of 423055019 is about 750.6986195574.

The spelling of 423055019 in words is "four hundred twenty-three million, fifty-five thousand, nineteen".