1242030313 has 2 divisors, whose sum is σ = 1242030314. Its totient is φ = 1242030312.

The previous prime is 1242030289. The next prime is 1242030329. The reversal of 1242030313 is 3130302421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868304089 + 373726224 = 29467^2 + 19332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242030313 - 2⁵ = 1242030281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242030113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621015156 + 621015157.

It is an arithmetic number, because the mean of its divisors is an integer number (621015157).

Almost surely, 2^1242030313 is an apocalyptic number.

It is an amenable number.

1242030313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242030313 is an equidigital number, since it uses as much as digits as its factorization.

1242030313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1242030313 is about 35242.4504397750. The cubic root of 1242030313 is about 1074.9231062361.

Adding to 1242030313 its reverse (3130302421), we get a palindrome (4372332734).

The spelling of 1242030313 in words is "one billion, two hundred forty-two million, thirty thousand, three hundred thirteen".