1342447 has 4 divisors (see below), whose sum is σ = 1359520. Its totient is φ = 1325376.

The previous prime is 1342433. The next prime is 1342489. The reversal of 1342447 is 7442431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1342447 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8418 + ... + 8575.

It is an arithmetic number, because the mean of its divisors is an integer number (339880).

2^1342447 is an apocalyptic number.

1342447 is a deficient number, since it is larger than the sum of its proper divisors (17073).

1342447 is an equidigital number, since it uses as much as digits as its factorization.

1342447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17072.

The product of its digits is 2688, while the sum is 25.

The square root of 1342447 is about 1158.6401512118. The cubic root of 1342447 is about 110.3144446286.

Adding to 1342447 its reverse (7442431), we get a palindrome (8784878).

The spelling of 1342447 in words is "one million, three hundred forty-two thousand, four hundred forty-seven".