1019423 has 2 divisors, whose sum is σ = 1019424. Its totient is φ = 1019422.

The previous prime is 1019413. The next prime is 1019443. The reversal of 1019423 is 3249101.

It is an a-pointer prime, because the next prime (1019443) can be obtained adding 1019423 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1019423 - 2¹⁴ = 1003039 is a prime.

It is an Ulam number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 1019395 and 1019404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1019413) 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 as a sum of consecutive naturals, namely, 509711 + 509712.

It is an arithmetic number, because the mean of its divisors is an integer number (509712).

2^1019423 is an apocalyptic number.

1019423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1019423 is an equidigital number, since it uses as much as digits as its factorization.

1019423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1019423 is about 1009.6647958605. The cubic root of 1019423 is about 100.6432862874.

The spelling of 1019423 in words is "one million, nineteen thousand, four hundred twenty-three".