1022403 has 4 divisors (see below), whose sum is σ = 1363208. Its totient is φ = 681600.

The previous prime is 1022389. The next prime is 1022429. The reversal of 1022403 is 3042201.

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

It is not a de Polignac number, because 1022403 - 2⁴ = 1022387 is a prime.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1022443) 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, 170398 + ... + 170403.

It is an arithmetic number, because the mean of its divisors is an integer number (340802).

2^1022403 is an apocalyptic number.

1022403 is a deficient number, since it is larger than the sum of its proper divisors (340805).

1022403 is an equidigital number, since it uses as much as digits as its factorization.

1022403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340804.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1022403 is about 1011.1394562571. The cubic root of 1022403 is about 100.7412584493.

Adding to 1022403 its reverse (3042201), we get a palindrome (4064604).

The spelling of 1022403 in words is "one million, twenty-two thousand, four hundred three".