1442261213 has 2 divisors, whose sum is σ = 1442261214. Its totient is φ = 1442261212.

The previous prime is 1442261173. The next prime is 1442261243. The reversal of 1442261213 is 3121622441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1219266724 + 222994489 = 34918^2 + 14933^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442261213 - 2¹⁴ = 1442244829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442261243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721130606 + 721130607.

It is an arithmetic number, because the mean of its divisors is an integer number (721130607).

Almost surely, 2^1442261213 is an apocalyptic number.

It is an amenable number.

1442261213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442261213 is an equidigital number, since it uses as much as digits as its factorization.

1442261213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 1442261213 is about 37977.1143321870. The cubic root of 1442261213 is about 1129.8340041231.

Adding to 1442261213 its reverse (3121622441), we get a palindrome (4563883654).

The spelling of 1442261213 in words is "one billion, four hundred forty-two million, two hundred sixty-one thousand, two hundred thirteen".