1005043405 has 16 divisors (see below), whose sum is σ = 1247500800. Its totient is φ = 776508480.

The previous prime is 1005043393. The next prime is 1005043423. The reversal of 1005043405 is 5043405001.

It is not a de Polignac number, because 1005043405 - 2¹¹ = 1005041357 is a prime.

It is a super-2 number, since 2×1005043405² = 2020224491867988050, which contains 22 as substring.

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, 72526 + ... + 85264.

It is an arithmetic number, because the mean of its divisors is an integer number (77968800).

Almost surely, 2^1005043405 is an apocalyptic number.

It is an amenable number.

1005043405 is a deficient number, since it is larger than the sum of its proper divisors (242457395).

1005043405 is a wasteful number, since it uses less digits than its factorization.

1005043405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13284.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1005043405 is about 31702.4195448865. The cubic root of 1005043405 is about 1001.6783166773.

Adding to 1005043405 its reverse (5043405001), we get a palindrome (6048448406).

The spelling of 1005043405 in words is "one billion, five million, forty-three thousand, four hundred five".