71853142 has 4 divisors (see below), whose sum is σ = 107779716. Its totient is φ = 35926570.

The previous prime is 71853139. The next prime is 71853143. The reversal of 71853142 is 24135817.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71853143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17963284 + ... + 17963287.

It is an arithmetic number, because the mean of its divisors is an integer number (26944929).

Almost surely, 2^71853142 is an apocalyptic number.

71853142 is a deficient number, since it is larger than the sum of its proper divisors (35926574).

71853142 is a wasteful number, since it uses less digits than its factorization.

71853142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35926573.

The product of its digits is 6720, while the sum is 31.

The square root of 71853142 is about 8476.6232663721. The cubic root of 71853142 is about 415.7337230558.

Adding to 71853142 its reverse (24135817), we get a palindrome (95988959).

The spelling of 71853142 in words is "seventy-one million, eight hundred fifty-three thousand, one hundred forty-two".