71432743 has 4 divisors (see below), whose sum is σ = 71632080. Its totient is φ = 71233408.

The previous prime is 71432741. The next prime is 71432807. The reversal of 71432743 is 34723417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34723417 = 197 ⋅176261.

It is a cyclic number.

It is not a de Polignac number, because 71432743 - 2¹ = 71432741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71432741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99130 + ... + 99847.

It is an arithmetic number, because the mean of its divisors is an integer number (17908020).

Almost surely, 2^71432743 is an apocalyptic number.

71432743 is a deficient number, since it is larger than the sum of its proper divisors (199337).

71432743 is a wasteful number, since it uses less digits than its factorization.

71432743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199336.

The product of its digits is 14112, while the sum is 31.

The square root of 71432743 is about 8451.7893371759. The cubic root of 71432743 is about 414.9213437808.

The spelling of 71432743 in words is "seventy-one million, four hundred thirty-two thousand, seven hundred forty-three".