1223442003 has 16 divisors (see below), whose sum is σ = 1865559296. Its totient is φ = 698634720.

The previous prime is 1223441993. The next prime is 1223442049. The reversal of 1223442003 is 3002443221.

It is not a de Polignac number, because 1223442003 - 2⁹ = 1223441491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223442083) 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, 13125 + ... + 51177.

It is an arithmetic number, because the mean of its divisors is an integer number (116597456).

Almost surely, 2^1223442003 is an apocalyptic number.

1223442003 is a deficient number, since it is larger than the sum of its proper divisors (642117293).

1223442003 is a wasteful number, since it uses less digits than its factorization.

1223442003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39594.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1223442003 is about 34977.7358186604. The cubic root of 1223442003 is about 1069.5336725334.

Adding to 1223442003 its reverse (3002443221), we get a palindrome (4225885224).

The spelling of 1223442003 in words is "one billion, two hundred twenty-three million, four hundred forty-two thousand, three".