42734223 has 72 divisors (see below), whose sum is σ = 77265552. Its totient is φ = 23514624.

The previous prime is 42734201. The next prime is 42734267. The reversal of 42734223 is 32243724.

It is not a de Polignac number, because 42734223 - 2⁵ = 42734191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (8064) is a multiple of the sum of its prime divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42734323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 440511 + ... + 440607.

Almost surely, 2^42734223 is an apocalyptic number.

42734223 is a deficient number, since it is larger than the sum of its proper divisors (34531329).

42734223 is an equidigital number, since it uses as much as digits as its factorization.

42734223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 144 counting only the distinct ones).

The product of its digits is 8064, while the sum is 27.

The square root of 42734223 is about 6537.1418066308. The cubic root of 42734223 is about 349.6165133095.

Adding to 42734223 its reverse (32243724), we get a palindrome (74977947).

The spelling of 42734223 in words is "forty-two million, seven hundred thirty-four thousand, two hundred twenty-three".