71042 has 4 divisors (see below), whose sum is σ = 106566. Its totient is φ = 35520.

The previous prime is 71039. The next prime is 71059. The reversal of 71042 is 24017.

It is a happy number.

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., 48841 + 22201 = 221^2 + 149^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17759 + ... + 17762.

2⁷¹⁰⁴² is an apocalyptic number.

71042 is a deficient number, since it is larger than the sum of its proper divisors (35524).

71042 is a wasteful number, since it uses less digits than its factorization.

71042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35523.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 71042 is about 266.5370518333. The cubic root of 71042 is about 41.4163408775.

Adding to 71042 its reverse (24017), we get a palindrome (95059).

The spelling of 71042 in words is "seventy-one thousand, forty-two", and thus it is an iban number.