405452043 has 12 divisors (see below), whose sum is σ = 587817568. Its totient is φ = 269302320.

The previous prime is 405452017. The next prime is 405452051. The reversal of 405452043 is 340254504.

It is not a de Polignac number, because 405452043 - 2⁶ = 405451979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405451998 and 405452016.

It is not an unprimeable number, because it can be changed into a prime (405452093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80680 + ... + 85557.

Almost surely, 2^405452043 is an apocalyptic number.

405452043 is a deficient number, since it is larger than the sum of its proper divisors (182365525).

405452043 is a wasteful number, since it uses less digits than its factorization.

405452043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166514 (or 166511 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 405452043 is about 20135.8397639632. The cubic root of 405452043 is about 740.1387875796.

The spelling of 405452043 in words is "four hundred five million, four hundred fifty-two thousand, forty-three".