42473643 has 4 divisors (see below), whose sum is σ = 56631528. Its totient is φ = 28315760.

The previous prime is 42473623. The next prime is 42473653. The reversal of 42473643 is 34637424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42473643 - 2²⁰ = 41425067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42473623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7078938 + ... + 7078943.

It is an arithmetic number, because the mean of its divisors is an integer number (14157882).

Almost surely, 2^42473643 is an apocalyptic number.

42473643 is a deficient number, since it is larger than the sum of its proper divisors (14157885).

42473643 is a wasteful number, since it uses less digits than its factorization.

42473643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14157884.

The product of its digits is 48384, while the sum is 33.

The square root of 42473643 is about 6517.1806020702. The cubic root of 42473643 is about 348.9044464366.

The spelling of 42473643 in words is "forty-two million, four hundred seventy-three thousand, six hundred forty-three".