71317142 has 32 divisors (see below), whose sum is σ = 124612992. Its totient is φ = 30311424.

The previous prime is 71317133. The next prime is 71317151. The reversal of 71317142 is 24171317.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71317133) and next prime (71317151).

It is a super-2 number, since 2×71317142² = 10172269486096328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19058 + ... + 22490.

It is an arithmetic number, because the mean of its divisors is an integer number (3894156).

Almost surely, 2^71317142 is an apocalyptic number.

71317142 is a deficient number, since it is larger than the sum of its proper divisors (53295850).

71317142 is a wasteful number, since it uses less digits than its factorization.

71317142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512.

The product of its digits is 1176, while the sum is 26.

The square root of 71317142 is about 8444.9477203829. The cubic root of 71317142 is about 414.6973978332.

Adding to 71317142 its reverse (24171317), we get a palindrome (95488459).

The spelling of 71317142 in words is "seventy-one million, three hundred seventeen thousand, one hundred forty-two".