1440422 has 4 divisors (see below), whose sum is σ = 2160636. Its totient is φ = 720210.

The previous prime is 1440419. The next prime is 1440437. The reversal of 1440422 is 2240441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2240441 = 7 ⋅320063.

It is a self number, because there is not a number n which added to its sum of digits gives 1440422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360104 + ... + 360107.

It is an arithmetic number, because the mean of its divisors is an integer number (540159).

2^1440422 is an apocalyptic number.

1440422 is a deficient number, since it is larger than the sum of its proper divisors (720214).

1440422 is an equidigital number, since it uses as much as digits as its factorization.

1440422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720213.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1440422 is about 1200.1758204530. The cubic root of 1440422 is about 112.9353534218.

Adding to 1440422 its reverse (2240441), we get a palindrome (3680863).

The spelling of 1440422 in words is "one million, four hundred forty thousand, four hundred twenty-two".