1042445 has 4 divisors (see below), whose sum is σ = 1250940. Its totient is φ = 833952.

The previous prime is 1042439. The next prime is 1042451. The reversal of 1042445 is 5442401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5442401 = 29 ⋅187669.

It is an interprime number because it is at equal distance from previous prime (1042439) and next prime (1042451).

It can be written as a sum of positive squares in 2 ways, for example, as 373321 + 669124 = 611^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042445 - 2⁶ = 1042381 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 104240 + ... + 104249.

It is an arithmetic number, because the mean of its divisors is an integer number (312735).

2^1042445 is an apocalyptic number.

It is an amenable number.

1042445 is a deficient number, since it is larger than the sum of its proper divisors (208495).

1042445 is an equidigital number, since it uses as much as digits as its factorization.

1042445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208494.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1042445 is about 1021.0019588620. The cubic root of 1042445 is about 101.3952748700.

Adding to 1042445 its reverse (5442401), we get a palindrome (6484846).

The spelling of 1042445 in words is "one million, forty-two thousand, four hundred forty-five".