1442009 has 2 divisors, whose sum is σ = 1442010. Its totient is φ = 1442008.

The previous prime is 1442003. The next prime is 1442017. The reversal of 1442009 is 9002441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 912025 + 529984 = 955^2 + 728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442009 - 2¹² = 1437913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1442003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721004 + 721005.

It is an arithmetic number, because the mean of its divisors is an integer number (721005).

2^1442009 is an apocalyptic number.

It is an amenable number.

1442009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442009 is an equidigital number, since it uses as much as digits as its factorization.

1442009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1442009 is about 1200.8367915749. The cubic root of 1442009 is about 112.9768141011.

The spelling of 1442009 in words is "one million, four hundred forty-two thousand, nine".