1045405 has 8 divisors (see below), whose sum is σ = 1260000. Its totient is φ = 832656.

The previous prime is 1045397. The next prime is 1045409. The reversal of 1045405 is 5045401.

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 1045405 - 2³ = 1045397 is a prime.

It is a super-2 number, since 2×1045405² = 2185743228050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1846 + ... + 2344.

It is an arithmetic number, because the mean of its divisors is an integer number (157500).

2^1045405 is an apocalyptic number.

It is an amenable number.

1045405 is a deficient number, since it is larger than the sum of its proper divisors (214595).

1045405 is an equidigital number, since it uses as much as digits as its factorization.

1045405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1045405 is about 1022.4504877988. The cubic root of 1045405 is about 101.4911540739.

The spelling of 1045405 in words is "one million, forty-five thousand, four hundred five".