1000442973 has 4 divisors (see below), whose sum is σ = 1333923968. Its totient is φ = 666961980.

The previous prime is 1000442959. The next prime is 1000443001. The reversal of 1000442973 is 3792440001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1000442973 - 2⁵ = 1000442941 is a prime.

It is a super-2 number, since 2×1000442973² = 2001772284450157458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000442973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000442923) 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, 166740493 + ... + 166740498.

It is an arithmetic number, because the mean of its divisors is an integer number (333480992).

Almost surely, 2^1000442973 is an apocalyptic number.

It is an amenable number.

1000442973 is a deficient number, since it is larger than the sum of its proper divisors (333480995).

1000442973 is an equidigital number, since it uses as much as digits as its factorization.

1000442973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333480994.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1000442973 is about 31629.7798443176. The cubic root of 1000442973 is about 1000.1476358692.

Adding to 1000442973 its reverse (3792440001), we get a palindrome (4792882974).

The spelling of 1000442973 in words is "one billion, four hundred forty-two thousand, nine hundred seventy-three".