42434223 has 16 divisors (see below), whose sum is σ = 61933536. Its totient is φ = 25683840.

The previous prime is 42434219. The next prime is 42434233. The reversal of 42434223 is 32243424.

It is not a de Polignac number, because 42434223 - 2² = 42434219 is a prime.

It is a super-2 number, since 2×42434223² = 3601326563227458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42434193 and 42434202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42434213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6540 + ... + 11297.

It is an arithmetic number, because the mean of its divisors is an integer number (3870846).

Almost surely, 2^42434223 is an apocalyptic number.

42434223 is a deficient number, since it is larger than the sum of its proper divisors (19499313).

42434223 is a wasteful number, since it uses less digits than its factorization.

42434223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17914.

The product of its digits is 4608, while the sum is 24.

The square root of 42434223 is about 6514.1555861063. The cubic root of 42434223 is about 348.7964730402.

Adding to 42434223 its reverse (32243424), we get a palindrome (74677647).

The spelling of 42434223 in words is "forty-two million, four hundred thirty-four thousand, two hundred twenty-three".