71442533 has 2 divisors, whose sum is σ = 71442534. Its totient is φ = 71442532.

The previous prime is 71442521. The next prime is 71442583. The reversal of 71442533 is 33524417.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68939809 + 2502724 = 8303^2 + 1582^2 .

It is a cyclic number.

It is not a de Polignac number, because 71442533 - 2²² = 67248229 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71442496 and 71442505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71442583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35721266 + 35721267.

It is an arithmetic number, because the mean of its divisors is an integer number (35721267).

Almost surely, 2^71442533 is an apocalyptic number.

It is an amenable number.

71442533 is a deficient number, since it is larger than the sum of its proper divisors (1).

71442533 is an equidigital number, since it uses as much as digits as its factorization.

71442533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 29.

The square root of 71442533 is about 8452.3684846320. The cubic root of 71442533 is about 414.9402981810.

The spelling of 71442533 in words is "seventy-one million, four hundred forty-two thousand, five hundred thirty-three".