1242320303 has 4 divisors (see below), whose sum is σ = 1419794640. Its totient is φ = 1064845968.

The previous prime is 1242320273. The next prime is 1242320329. The reversal of 1242320303 is 3030232421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3030232421 = 6389 ⋅474289.

It is a cyclic number.

It is not a de Polignac number, because 1242320303 - 2⁸ = 1242320047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242320363) 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, 88737158 + ... + 88737171.

It is an arithmetic number, because the mean of its divisors is an integer number (354948660).

Almost surely, 2^1242320303 is an apocalyptic number.

1242320303 is a deficient number, since it is larger than the sum of its proper divisors (177474337).

1242320303 is an equidigital number, since it uses as much as digits as its factorization.

1242320303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177474336.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1242320303 is about 35246.5644141383. The cubic root of 1242320303 is about 1075.0067576283.

Adding to 1242320303 its reverse (3030232421), we get a palindrome (4272552724).

The spelling of 1242320303 in words is "one billion, two hundred forty-two million, three hundred twenty thousand, three hundred three".