71936141 has 4 divisors (see below), whose sum is σ = 73115484. Its totient is φ = 70756800.

The previous prime is 71936113. The next prime is 71936143. The reversal of 71936141 is 14163917.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38180041 + 33756100 = 6179^2 + 5810^2 .

It is a cyclic number.

It is not a de Polignac number, because 71936141 - 2¹⁸ = 71673997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71936098 and 71936107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71936143) 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 3 ways as a sum of consecutive naturals, for example, 589580 + ... + 589701.

It is an arithmetic number, because the mean of its divisors is an integer number (18278871).

Almost surely, 2^71936141 is an apocalyptic number.

It is an amenable number.

71936141 is a deficient number, since it is larger than the sum of its proper divisors (1179343).

71936141 is a wasteful number, since it uses less digits than its factorization.

71936141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179342.

The product of its digits is 4536, while the sum is 32.

The square root of 71936141 is about 8481.5176118428. The cubic root of 71936141 is about 415.8937355704.

The spelling of 71936141 in words is "seventy-one million, nine hundred thirty-six thousand, one hundred forty-one".