1022042423 has 4 divisors (see below), whose sum is σ = 1022481720. Its totient is φ = 1021603128.

The previous prime is 1022042419. The next prime is 1022042429. The reversal of 1022042423 is 3242402201.

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 1022042423 - 2² = 1022042419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022042395 and 1022042404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022042429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216140 + ... + 220817.

It is an arithmetic number, because the mean of its divisors is an integer number (255620430).

Almost surely, 2^1022042423 is an apocalyptic number.

1022042423 is a deficient number, since it is larger than the sum of its proper divisors (439297).

1022042423 is an equidigital number, since it uses as much as digits as its factorization.

1022042423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439296.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1022042423 is about 31969.3982270546. The cubic root of 1022042423 is about 1007.2941404876.

Adding to 1022042423 its reverse (3242402201), we get a palindrome (4264444624).

The spelling of 1022042423 in words is "one billion, twenty-two million, forty-two thousand, four hundred twenty-three".