1004043405 has 16 divisors (see below), whose sum is σ = 1607433984. Its totient is φ = 535168320.

The previous prime is 1004043373. The next prime is 1004043413. The reversal of 1004043405 is 5043404001.

It is not a de Polignac number, because 1004043405 - 2⁵ = 1004043373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6892 + ... + 45338.

It is an arithmetic number, because the mean of its divisors is an integer number (100464624).

Almost surely, 2^1004043405 is an apocalyptic number.

1004043405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1004043405 is a deficient number, since it is larger than the sum of its proper divisors (603390579).

1004043405 is a wasteful number, since it uses less digits than its factorization.

1004043405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40196.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1004043405 is about 31686.6439529339. The cubic root of 1004043405 is about 1001.3459891670.

Adding to 1004043405 its reverse (5043404001), we get a palindrome (6047447406).

The spelling of 1004043405 in words is "one billion, four million, forty-three thousand, four hundred five".