71124142 has 16 divisors (see below), whose sum is σ = 111767040. Its totient is φ = 33880792.

The previous prime is 71124139. The next prime is 71124149. The reversal of 71124142 is 24142117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71124149) 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 in 7 ways as a sum of consecutive naturals, for example, 9159 + ... + 15037.

It is an arithmetic number, because the mean of its divisors is an integer number (6985440).

Almost surely, 2^71124142 is an apocalyptic number.

71124142 is a deficient number, since it is larger than the sum of its proper divisors (40642898).

71124142 is a wasteful number, since it uses less digits than its factorization.

71124142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6167.

The product of its digits is 448, while the sum is 22.

The square root of 71124142 is about 8433.5130283886. The cubic root of 71124142 is about 414.3229721659.

Adding to 71124142 its reverse (24142117), we get a palindrome (95266259).

The spelling of 71124142 in words is "seventy-one million, one hundred twenty-four thousand, one hundred forty-two".