2042423 has 4 divisors (see below), whose sum is σ = 2131248. Its totient is φ = 1953600.

The previous prime is 2042419. The next prime is 2042429. The reversal of 2042423 is 3242402.

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 2042423 - 2² = 2042419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042429) 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 3 ways as a sum of consecutive naturals, for example, 44378 + ... + 44423.

It is an arithmetic number, because the mean of its divisors is an integer number (532812).

2^2042423 is an apocalyptic number.

2042423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2042423 is a deficient number, since it is larger than the sum of its proper divisors (88825).

2042423 is an equidigital number, since it uses as much as digits as its factorization.

2042423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88824.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 2042423 is about 1429.1336536517. The cubic root of 2042423 is about 126.8767067644.

Adding to 2042423 its reverse (3242402), we get a palindrome (5284825).

The spelling of 2042423 in words is "two million, forty-two thousand, four hundred twenty-three".