1242003 has 32 divisors (see below), whose sum is σ = 2073600. Its totient is φ = 658560.

The previous prime is 1242001. The next prime is 1242029. The reversal of 1242003 is 3002421.

It is not a de Polignac number, because 1242003 - 2¹ = 1242001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242003.

It is not an unprimeable number, because it can be changed into a prime (1242001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17458 + ... + 17528.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2^1242003 is an apocalyptic number.

1242003 is a deficient number, since it is larger than the sum of its proper divisors (831597).

1242003 is an equidigital number, since it uses as much as digits as its factorization.

1242003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 98 counting only the distinct ones).

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

The square root of 1242003 is about 1114.4518832143. The cubic root of 1242003 is about 107.4915226775.

Adding to 1242003 its reverse (3002421), we get a palindrome (4244424).

The spelling of 1242003 in words is "one million, two hundred forty-two thousand, three".