1040423 has 4 divisors (see below), whose sum is σ = 1044120. Its totient is φ = 1036728.

The previous prime is 1040419. The next prime is 1040447. The reversal of 1040423 is 3240401.

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

It is a cyclic number.

It is not a de Polignac number, because 1040423 - 2² = 1040419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1040398 and 1040407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388 + ... + 2001.

It is an arithmetic number, because the mean of its divisors is an integer number (261030).

2^1040423 is an apocalyptic number.

1040423 is a deficient number, since it is larger than the sum of its proper divisors (3697).

1040423 is an equidigital number, since it uses as much as digits as its factorization.

1040423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1040423 is about 1020.0112744475. The cubic root of 1040423 is about 101.3296746236.

Adding to 1040423 its reverse (3240401), we get a palindrome (4280824).

The spelling of 1040423 in words is "one million, forty thousand, four hundred twenty-three".