71145743 has 2 divisors, whose sum is σ = 71145744. Its totient is φ = 71145742.

The previous prime is 71145689. The next prime is 71145761. The reversal of 71145743 is 34754117.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71145743 - 2¹⁰ = 71144719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71145773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35572871 + 35572872.

It is an arithmetic number, because the mean of its divisors is an integer number (35572872).

Almost surely, 2^71145743 is an apocalyptic number.

71145743 is a deficient number, since it is larger than the sum of its proper divisors (1).

71145743 is an equidigital number, since it uses as much as digits as its factorization.

71145743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 32.

The square root of 71145743 is about 8434.7935955778. The cubic root of 71145743 is about 414.3649123772.

The spelling of 71145743 in words is "seventy-one million, one hundred forty-five thousand, seven hundred forty-three".