42042134 has 4 divisors (see below), whose sum is σ = 63063204. Its totient is φ = 21021066.

The previous prime is 42042109. The next prime is 42042151. The reversal of 42042134 is 43124024.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510532 + ... + 10510535.

It is an arithmetic number, because the mean of its divisors is an integer number (15765801).

Almost surely, 2^42042134 is an apocalyptic number.

42042134 is a deficient number, since it is larger than the sum of its proper divisors (21021070).

42042134 is a wasteful number, since it uses less digits than its factorization.

42042134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21021069.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 42042134 is about 6483.9905922202. The cubic root of 42042134 is about 347.7188628684.

Adding to 42042134 its reverse (43124024), we get a palindrome (85166158).

The spelling of 42042134 in words is "forty-two million, forty-two thousand, one hundred thirty-four".