1422003 has 16 divisors (see below), whose sum is σ = 2120832. Its totient is φ = 840000.

The previous prime is 1421989. The next prime is 1422007. The reversal of 1422003 is 3002241.

It is not a de Polignac number, because 1422003 - 2⁸ = 1421747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1422003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 828 + ... + 1878.

It is an arithmetic number, because the mean of its divisors is an integer number (132552).

2^1422003 is an apocalyptic number.

1422003 is a deficient number, since it is larger than the sum of its proper divisors (698829).

1422003 is a wasteful number, since it uses less digits than its factorization.

1422003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106.

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

The square root of 1422003 is about 1192.4776727470. The cubic root of 1422003 is about 112.4519103105.

Adding to 1422003 its reverse (3002241), we get a palindrome (4424244).

It can be divided in two parts, 142 and 2003, that added together give a triangular number (2145 = T₆₅).

The spelling of 1422003 in words is "one million, four hundred twenty-two thousand, three".