1242351359 has 2 divisors, whose sum is σ = 1242351360. Its totient is φ = 1242351358.

The previous prime is 1242351349. The next prime is 1242351401. The reversal of 1242351359 is 9531532421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242351359 - 2⁴ = 1242351343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242351349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621175679 + 621175680.

It is an arithmetic number, because the mean of its divisors is an integer number (621175680).

Almost surely, 2^1242351359 is an apocalyptic number.

1242351359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242351359 is an equidigital number, since it uses as much as digits as its factorization.

1242351359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 1242351359 is about 35247.0049649612. The cubic root of 1242351359 is about 1075.0157153643.

The spelling of 1242351359 in words is "one billion, two hundred forty-two million, three hundred fifty-one thousand, three hundred fifty-nine".