1029423 has 4 divisors (see below), whose sum is σ = 1372568. Its totient is φ = 686280.

The previous prime is 1029409. The next prime is 1029433. The reversal of 1029423 is 3249201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1029423 - 2⁴ = 1029407 is a prime.

It is a D-number.

It is a Duffinian number.

1029423 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1029423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1029403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171568 + ... + 171573.

It is an arithmetic number, because the mean of its divisors is an integer number (343142).

2^1029423 is an apocalyptic number.

1029423 is a deficient number, since it is larger than the sum of its proper divisors (343145).

1029423 is an equidigital number, since it uses as much as digits as its factorization.

1029423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343144.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1029423 is about 1014.6048491901. The cubic root of 1029423 is about 100.9713018488.

The spelling of 1029423 in words is "one million, twenty-nine thousand, four hundred twenty-three".