1042405 has 32 divisors (see below), whose sum is σ = 1612800. Its totient is φ = 628992.

The previous prime is 1042399. The next prime is 1042427. The reversal of 1042405 is 5042401.

It is not a de Polignac number, because 1042405 - 2⁵ = 1042373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13156 + ... + 13234.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2^1042405 is an apocalyptic number.

It is an amenable number.

1042405 is a deficient number, since it is larger than the sum of its proper divisors (570395).

1042405 is a wasteful number, since it uses less digits than its factorization.

1042405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1042405 is about 1020.9823700731. The cubic root of 1042405 is about 101.3939779630.

Adding to 1042405 its reverse (5042401), we get a palindrome (6084806).

The spelling of 1042405 in words is "one million, forty-two thousand, four hundred five".