1442241769 has 2 divisors, whose sum is σ = 1442241770. Its totient is φ = 1442241768.

The previous prime is 1442241751. The next prime is 1442241809. The reversal of 1442241769 is 9671422441.

It is an a-pointer prime, because the next prime (1442241809) can be obtained adding 1442241769 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 822829225 + 619412544 = 28685^2 + 24888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442241769 is a prime.

It is a super-2 number, since 2×1442241769² = 4160122640496498722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1442241709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721120884 + 721120885.

It is an arithmetic number, because the mean of its divisors is an integer number (721120885).

Almost surely, 2^1442241769 is an apocalyptic number.

It is an amenable number.

1442241769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442241769 is an equidigital number, since it uses as much as digits as its factorization.

1442241769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The square root of 1442241769 is about 37976.8583350440. The cubic root of 1442241769 is about 1129.8289267740.

The spelling of 1442241769 in words is "one billion, four hundred forty-two million, two hundred forty-one thousand, seven hundred sixty-nine".