71145342 has 12 divisors (see below), whose sum is σ = 154148280. Its totient is φ = 23715108.

The previous prime is 71145317. The next prime is 71145379. The reversal of 71145342 is 24354117.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1976242 + ... + 1976277.

It is an arithmetic number, because the mean of its divisors is an integer number (12845690).

Almost surely, 2^71145342 is an apocalyptic number.

71145342 is an abundant number, since it is smaller than the sum of its proper divisors (83002938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71145342 is a wasteful number, since it uses less digits than its factorization.

71145342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3952527 (or 3952524 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 71145342 is about 8434.7698249567. The cubic root of 71145342 is about 414.3641338783.

Adding to 71145342 its reverse (24354117), we get a palindrome (95499459).

The spelling of 71145342 in words is "seventy-one million, one hundred forty-five thousand, three hundred forty-two".