1242444311 has 2 divisors, whose sum is σ = 1242444312. Its totient is φ = 1242444310.

The previous prime is 1242444283. The next prime is 1242444341. The reversal of 1242444311 is 1134442421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242444311 - 2³⁰ = 168702487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242444341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621222155 + 621222156.

It is an arithmetic number, because the mean of its divisors is an integer number (621222156).

Almost surely, 2^1242444311 is an apocalyptic number.

1242444311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242444311 is an equidigital number, since it uses as much as digits as its factorization.

1242444311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 26.

The square root of 1242444311 is about 35248.3235204173. The cubic root of 1242444311 is about 1075.0425253774.

Adding to 1242444311 its reverse (1134442421), we get a palindrome (2376886732).

The spelling of 1242444311 in words is "one billion, two hundred forty-two million, four hundred forty-four thousand, three hundred eleven".