71124542 has 4 divisors (see below), whose sum is σ = 106686816. Its totient is φ = 35562270.

The previous prime is 71124539. The next prime is 71124577. The reversal of 71124542 is 24542117.

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, 17781134 + ... + 17781137.

It is an arithmetic number, because the mean of its divisors is an integer number (26671704).

Almost surely, 2^71124542 is an apocalyptic number.

71124542 is a deficient number, since it is larger than the sum of its proper divisors (35562274).

71124542 is a wasteful number, since it uses less digits than its factorization.

71124542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35562273.

The product of its digits is 2240, while the sum is 26.

The square root of 71124542 is about 8433.5367432650. The cubic root of 71124542 is about 414.3237488777.

Adding to 71124542 its reverse (24542117), we get a palindrome (95666659).

The spelling of 71124542 in words is "seventy-one million, one hundred twenty-four thousand, five hundred forty-two".