1042665 has 16 divisors (see below), whose sum is σ = 1796928. Its totient is φ = 513216.

The previous prime is 1042633. The next prime is 1042681. The reversal of 1042665 is 5662401.

It is not a de Polignac number, because 1042665 - 2⁵ = 1042633 is a prime.

It is an Ulam number.

It is a Curzon number.

1042665 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2479 + ... + 2868.

It is an arithmetic number, because the mean of its divisors is an integer number (112308).

2^1042665 is an apocalyptic number.

1042665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1042665 is a deficient number, since it is larger than the sum of its proper divisors (754263).

1042665 is a wasteful number, since it uses less digits than its factorization.

1042665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1042665 is about 1021.1096904838. The cubic root of 1042665 is about 101.4024072660.

The spelling of 1042665 in words is "one million, forty-two thousand, six hundred sixty-five".