42234142 has 4 divisors (see below), whose sum is σ = 63351216. Its totient is φ = 21117070.

The previous prime is 42234113. The next prime is 42234151. The reversal of 42234142 is 24143224.

It is a happy number.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10558534 + ... + 10558537.

It is an arithmetic number, because the mean of its divisors is an integer number (15837804).

Almost surely, 2^42234142 is an apocalyptic number.

42234142 is a deficient number, since it is larger than the sum of its proper divisors (21117074).

42234142 is a wasteful number, since it uses less digits than its factorization.

42234142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21117073.

The product of its digits is 1536, while the sum is 22.

The square root of 42234142 is about 6498.7800393612. The cubic root of 42234142 is about 348.2474074106.

Adding to 42234142 its reverse (24143224), we get a palindrome (66377366).

The spelling of 42234142 in words is "forty-two million, two hundred thirty-four thousand, one hundred forty-two".