1442747 has 4 divisors (see below), whose sum is σ = 1453416. Its totient is φ = 1432080.

The previous prime is 1442743. The next prime is 1442783. The reversal of 1442747 is 7472441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7472441 = 859 ⋅8699.

It is a cyclic number.

It is not a de Polignac number, because 1442747 - 2² = 1442743 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5129 + ... + 5402.

It is an arithmetic number, because the mean of its divisors is an integer number (363354).

2^1442747 is an apocalyptic number.

1442747 is a deficient number, since it is larger than the sum of its proper divisors (10669).

1442747 is a wasteful number, since it uses less digits than its factorization.

1442747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10668.

The product of its digits is 6272, while the sum is 29.

The square root of 1442747 is about 1201.1440379904. The cubic root of 1442747 is about 112.9960841309.

The spelling of 1442747 in words is "one million, four hundred forty-two thousand, seven hundred forty-seven".