42434473 has 4 divisors (see below), whose sum is σ = 42715648. Its totient is φ = 42153300.

The previous prime is 42434459. The next prime is 42434479. The reversal of 42434473 is 37443424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42434473 - 2⁹ = 42433961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42434479) 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, 140361 + ... + 140662.

It is an arithmetic number, because the mean of its divisors is an integer number (10678912).

Almost surely, 2^42434473 is an apocalyptic number.

It is an amenable number.

42434473 is a deficient number, since it is larger than the sum of its proper divisors (281175).

42434473 is a wasteful number, since it uses less digits than its factorization.

42434473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281174.

The product of its digits is 32256, while the sum is 31.

The square root of 42434473 is about 6514.1747750579. The cubic root of 42434473 is about 348.7971580137.

Adding to 42434473 its reverse (37443424), we get a palindrome (79877897).

The spelling of 42434473 in words is "forty-two million, four hundred thirty-four thousand, four hundred seventy-three".