19422423 has 10 divisors (see below), whose sum is σ = 29013864. Its totient is φ = 12948228.

The previous prime is 19422379. The next prime is 19422443. The reversal of 19422423 is 32422491.

It is not a de Polignac number, because 19422423 - 2⁸ = 19422167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19422443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 119811 + ... + 119972.

Almost surely, 2^19422423 is an apocalyptic number.

19422423 is a deficient number, since it is larger than the sum of its proper divisors (9591441).

19422423 is an equidigital number, since it uses as much as digits as its factorization.

19422423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239795 (or 239786 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 19422423 is about 4407.0878139651. The cubic root of 19422423 is about 268.8032216211.

The spelling of 19422423 in words is "nineteen million, four hundred twenty-two thousand, four hundred twenty-three".