42235042 has 4 divisors (see below), whose sum is σ = 63352566. Its totient is φ = 21117520.

The previous prime is 42235033. The next prime is 42235057. The reversal of 42235042 is 24053224.

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

It can be written as a sum of positive squares in only one way, i.e., 41873841 + 361201 = 6471^2 + 601^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10558759 + ... + 10558762.

Almost surely, 2^42235042 is an apocalyptic number.

42235042 is a deficient number, since it is larger than the sum of its proper divisors (21117524).

42235042 is a wasteful number, since it uses less digits than its factorization.

42235042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21117523.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42235042 is about 6498.8492827577. The cubic root of 42235042 is about 348.2498810842.

Adding to 42235042 its reverse (24053224), we get a palindrome (66288266).

The spelling of 42235042 in words is "forty-two million, two hundred thirty-five thousand, forty-two".