405412543 has 6 divisors (see below), whose sum is σ = 408369624. Its totient is φ = 402476724.

The previous prime is 405412517. The next prime is 405412571. The reversal of 405412543 is 345214504.

It is not a de Polignac number, because 405412543 - 2²¹ = 403315391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406412543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8830 + ... + 29812.

It is an arithmetic number, because the mean of its divisors is an integer number (68061604).

Almost surely, 2^405412543 is an apocalyptic number.

405412543 is a deficient number, since it is larger than the sum of its proper divisors (2957081).

405412543 is an equidigital number, since it uses as much as digits as its factorization.

405412543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21261 (or 21122 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 405412543 is about 20134.8589019144. The cubic root of 405412543 is about 740.1147515009.

The spelling of 405412543 in words is "four hundred five million, four hundred twelve thousand, five hundred forty-three".