1442071247 has 2 divisors, whose sum is σ = 1442071248. Its totient is φ = 1442071246.

The previous prime is 1442071243. The next prime is 1442071261. The reversal of 1442071247 is 7421702441.

It is a weak prime.

It is an emirp because it is prime and its reverse (7421702441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1442071247 - 2² = 1442071243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442071243) 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, 721035623 + 721035624.

It is an arithmetic number, because the mean of its divisors is an integer number (721035624).

Almost surely, 2^1442071247 is an apocalyptic number.

1442071247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442071247 is an equidigital number, since it uses as much as digits as its factorization.

1442071247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 1442071247 is about 37974.6131909201. The cubic root of 1442071247 is about 1129.7843969580.

Adding to 1442071247 its reverse (7421702441), we get a palindrome (8863773688).

The spelling of 1442071247 in words is "one billion, four hundred forty-two million, seventy-one thousand, two hundred forty-seven".