42115042 has 4 divisors (see below), whose sum is σ = 63172566. Its totient is φ = 21057520.

The previous prime is 42115027. The next prime is 42115049. The reversal of 42115042 is 24051124.

42115042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 42107121 + 7921 = 6489^2 + 89^2 .

It is not an unprimeable number, because it can be changed into a prime (42115049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10528759 + ... + 10528762.

Almost surely, 2^42115042 is an apocalyptic number.

42115042 is a deficient number, since it is larger than the sum of its proper divisors (21057524).

42115042 is a wasteful number, since it uses less digits than its factorization.

42115042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21057523.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 42115042 is about 6489.6103118754. The cubic root of 42115042 is about 347.9197474255.

Adding to 42115042 its reverse (24051124), we get a palindrome (66166166).

The spelling of 42115042 in words is "forty-two million, one hundred fifteen thousand, forty-two".