71869143 has 16 divisors (see below), whose sum is σ = 97203456. Its totient is φ = 47228160.

The previous prime is 71869141. The next prime is 71869151. The reversal of 71869143 is 34196817.

It is not a de Polignac number, because 71869143 - 2¹ = 71869141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71869141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142630 + ... + 143132.

It is an arithmetic number, because the mean of its divisors is an integer number (6075216).

Almost surely, 2^71869143 is an apocalyptic number.

71869143 is a deficient number, since it is larger than the sum of its proper divisors (25334313).

71869143 is a wasteful number, since it uses less digits than its factorization.

71869143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094.

The product of its digits is 36288, while the sum is 39.

The square root of 71869143 is about 8477.5670448543. The cubic root of 71869143 is about 415.7645807255.

The spelling of 71869143 in words is "seventy-one million, eight hundred sixty-nine thousand, one hundred forty-three".