1042005 has 8 divisors (see below), whose sum is σ = 1667232. Its totient is φ = 555728.

The previous prime is 1042001. The next prime is 1042021. The reversal of 1042005 is 5002401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1042005 - 2² = 1042001 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 34719 + ... + 34748.

It is an arithmetic number, because the mean of its divisors is an integer number (208404).

2^1042005 is an apocalyptic number.

1042005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1042005 is a deficient number, since it is larger than the sum of its proper divisors (625227).

1042005 is an equidigital number, since it uses as much as digits as its factorization.

1042005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69475.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 1042005 is about 1020.7864615090. The cubic root of 1042005 is about 101.3810070671.

Adding to 1042005 its reverse (5002401), we get a palindrome (6044406).

The spelling of 1042005 in words is "one million, forty-two thousand, five".