42034 has 4 divisors (see below), whose sum is σ = 63054. Its totient is φ = 21016.

The previous prime is 42023. The next prime is 42043. The reversal of 42034 is 43024.

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., 42025 + 9 = 205^2 + 3^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 7 and base 14.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10507 + ... + 10510.

2⁴²⁰³⁴ is an apocalyptic number.

42034 is a deficient number, since it is larger than the sum of its proper divisors (21020).

42034 is a wasteful number, since it uses less digits than its factorization.

42034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21019.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 42034 is about 205.0219500444. The cubic root of 42034 is about 34.7696436734.

Adding to 42034 its reverse (43024), we get a palindrome (85058).

Subtracting 42034 from its reverse (43024), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 420 and 34, that added together give a palindrome (454).

The spelling of 42034 in words is "forty-two thousand, thirty-four", and thus it is an eban number.