71442193 has 2 divisors, whose sum is σ = 71442194. Its totient is φ = 71442192.

The previous prime is 71442191. The next prime is 71442229. The reversal of 71442193 is 39124417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64770304 + 6671889 = 8048^2 + 2583^2 .

It is a cyclic number.

It is not a de Polignac number, because 71442193 - 2¹ = 71442191 is a prime.

Together with 71442191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71442191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35721096 + 35721097.

It is an arithmetic number, because the mean of its divisors is an integer number (35721097).

Almost surely, 2^71442193 is an apocalyptic number.

It is an amenable number.

71442193 is a deficient number, since it is larger than the sum of its proper divisors (1).

71442193 is an equidigital number, since it uses as much as digits as its factorization.

71442193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 71442193 is about 8452.3483719023. The cubic root of 71442193 is about 414.9396399366.

The spelling of 71442193 in words is "seventy-one million, four hundred forty-two thousand, one hundred ninety-three".