420545043 has 12 divisors (see below), whose sum is σ = 615776200. Its totient is φ = 276522336.

The previous prime is 420545033. The next prime is 420545119. The reversal of 420545043 is 340545024.

420545043 is a `hidden beast` number, since 4 + 205 + 450 + 4 + 3 = 666.

It is not a de Polignac number, because 420545043 - 2²⁴ = 403767827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420544998 and 420545016.

It is not an unprimeable number, because it can be changed into a prime (420545003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319393 + ... + 320706.

Almost surely, 2^420545043 is an apocalyptic number.

420545043 is a deficient number, since it is larger than the sum of its proper divisors (195231157).

420545043 is a wasteful number, since it uses less digits than its factorization.

420545043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640178 (or 640175 counting only the distinct ones).

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

The square root of 420545043 is about 20507.1949081292. The cubic root of 420545043 is about 749.2110476967.

The spelling of 420545043 in words is "four hundred twenty million, five hundred forty-five thousand, forty-three".