1030405 has 4 divisors (see below), whose sum is σ = 1236492. Its totient is φ = 824320.

The previous prime is 1030369. The next prime is 1030411. The reversal of 1030405 is 5040301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 417316 + 613089 = 646^2 + 783^2 .

It is not a de Polignac number, because 1030405 - 2¹⁵ = 997637 is a prime.

It is a Duffinian number.

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, 103036 + ... + 103045.

It is an arithmetic number, because the mean of its divisors is an integer number (309123).

2^1030405 is an apocalyptic number.

It is an amenable number.

1030405 is a deficient number, since it is larger than the sum of its proper divisors (206087).

1030405 is an equidigital number, since it uses as much as digits as its factorization.

1030405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206086.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 1030405 is about 1015.0886660780. The cubic root of 1030405 is about 101.0033982453.

Adding to 1030405 its reverse (5040301), we get a palindrome (6070706).

The spelling of 1030405 in words is "one million, thirty thousand, four hundred five".