71340434 has 16 divisors (see below), whose sum is σ = 121815360. Its totient is φ = 31017360.

The previous prime is 71340371. The next prime is 71340439. The reversal of 71340434 is 43404317.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71340439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69989 + ... + 71000.

It is an arithmetic number, because the mean of its divisors is an integer number (7613460).

Almost surely, 2^71340434 is an apocalyptic number.

71340434 is a deficient number, since it is larger than the sum of its proper divisors (50474926).

71340434 is a wasteful number, since it uses less digits than its factorization.

71340434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141025.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 71340434 is about 8446.3266571925. The cubic root of 71340434 is about 414.7425392964.

The spelling of 71340434 in words is "seventy-one million, three hundred forty thousand, four hundred thirty-four".