1442345 has 8 divisors (see below), whose sum is σ = 1759560. Its totient is φ = 1134720.

The previous prime is 1442341. The next prime is 1442351. The reversal of 1442345 is 5432441.

It can be written as a sum of positive squares in 4 ways, for example, as 126736 + 1315609 = 356^2 + 1147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1442345 - 2² = 1442341 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442345.

It is not an unprimeable number, because it can be changed into a prime (1442341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2060 + ... + 2669.

It is an arithmetic number, because the mean of its divisors is an integer number (219945).

2^1442345 is an apocalyptic number.

It is an amenable number.

1442345 is a deficient number, since it is larger than the sum of its proper divisors (317215).

1442345 is an equidigital number, since it uses as much as digits as its factorization.

1442345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4795.

The product of its digits is 1920, while the sum is 23.

The square root of 1442345 is about 1200.9766858686. The cubic root of 1442345 is about 112.9855882631.

Adding to 1442345 its reverse (5432441), we get a palindrome (6874786).

The spelling of 1442345 in words is "one million, four hundred forty-two thousand, three hundred forty-five".