71242 has 8 divisors (see below), whose sum is σ = 108000. Its totient is φ = 35244.

The previous prime is 71237. The next prime is 71249. The reversal of 71242 is 24217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (71249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259 + ... + 457.

It is an arithmetic number, because the mean of its divisors is an integer number (13500).

2⁷¹²⁴² is an apocalyptic number.

71242 is a deficient number, since it is larger than the sum of its proper divisors (36758).

71242 is a wasteful number, since it uses less digits than its factorization.

71242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380.

The product of its digits is 112, while the sum is 16.

The square root of 71242 is about 266.9119705071. The cubic root of 71242 is about 41.4551700546.

Adding to 71242 its reverse (24217), we get a palindrome (95459).

It can be divided in two parts, 71 and 242, that added together give a palindrome (313).

The spelling of 71242 in words is "seventy-one thousand, two hundred forty-two", and thus it is an iban number.