1442021 has 6 divisors (see below), whose sum is σ = 1677510. Its totient is φ = 1235976.

The previous prime is 1442017. The next prime is 1442053. The reversal of 1442021 is 1202441.

It can be written as a sum of positive squares in only one way, i.e., 1416100 + 25921 = 1190^2 + 161^2 .

It is not a de Polignac number, because 1442021 - 2² = 1442017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1441987 and 1442005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14666 + ... + 14763.

It is an arithmetic number, because the mean of its divisors is an integer number (279585).

2^1442021 is an apocalyptic number.

It is an amenable number.

1442021 is a deficient number, since it is larger than the sum of its proper divisors (235489).

1442021 is an equidigital number, since it uses as much as digits as its factorization.

1442021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29443 (or 29436 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1442021 is about 1200.8417880803. The cubic root of 1442021 is about 112.9771274875.

Adding to 1442021 its reverse (1202441), we get a palindrome (2644462).

It can be divided in two parts, 14420 and 21, that added together give a palindrome (14441).

The spelling of 1442021 in words is "one million, four hundred forty-two thousand, twenty-one".