1442040697 has 2 divisors, whose sum is σ = 1442040698. Its totient is φ = 1442040696.

The previous prime is 1442040673. The next prime is 1442040737. The reversal of 1442040697 is 7960402441.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1053911296 + 388129401 = 32464^2 + 19701^2 .

It is an emirp because it is prime and its reverse (7960402441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1442040697 - 2⁷ = 1442040569 is a prime.

It is not a weakly prime, because it can be changed into another prime (1442040617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721020348 + 721020349.

It is an arithmetic number, because the mean of its divisors is an integer number (721020349).

Almost surely, 2^1442040697 is an apocalyptic number.

It is an amenable number.

1442040697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442040697 is an equidigital number, since it uses as much as digits as its factorization.

1442040697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1442040697 is about 37974.2109463778. The cubic root of 1442040697 is about 1129.7764188138.

The spelling of 1442040697 in words is "one billion, four hundred forty-two million, forty thousand, six hundred ninety-seven".