71437143 has 16 divisors (see below), whose sum is σ = 97299936. Its totient is φ = 46609920.

The previous prime is 71437099. The next prime is 71437151. The reversal of 71437143 is 34173417.

It is not a de Polignac number, because 71437143 - 2⁸ = 71436887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71437143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71437193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28813 + ... + 31193.

It is an arithmetic number, because the mean of its divisors is an integer number (6081246).

Almost surely, 2^71437143 is an apocalyptic number.

71437143 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

71437143 is a deficient number, since it is larger than the sum of its proper divisors (25862793).

71437143 is a wasteful number, since it uses less digits than its factorization.

71437143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594.

The product of its digits is 7056, while the sum is 30.

The square root of 71437143 is about 8452.0496330772. The cubic root of 71437143 is about 414.9298628266.

The spelling of 71437143 in words is "seventy-one million, four hundred thirty-seven thousand, one hundred forty-three".