1242303 has 4 divisors (see below), whose sum is σ = 1656408. Its totient is φ = 828200.

The previous prime is 1242289. The next prime is 1242317. The reversal of 1242303 is 3032421.

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

It is an interprime number because it is at equal distance from previous prime (1242289) and next prime (1242317).

It is a cyclic number.

It is not a de Polignac number, because 1242303 - 2⁵ = 1242271 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242103) 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, 207048 + ... + 207053.

It is an arithmetic number, because the mean of its divisors is an integer number (414102).

2^1242303 is an apocalyptic number.

1242303 is a deficient number, since it is larger than the sum of its proper divisors (414105).

1242303 is an equidigital number, since it uses as much as digits as its factorization.

1242303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414104.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1242303 is about 1114.5864704006. The cubic root of 1242303 is about 107.5001766718.

Adding to 1242303 its reverse (3032421), we get a palindrome (4274724).

The spelling of 1242303 in words is "one million, two hundred forty-two thousand, three hundred three".