9942571 has 2 divisors, whose sum is σ = 9942572. Its totient is φ = 9942570.

The previous prime is 9942557. The next prime is 9942577. The reversal of 9942571 is 1752499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9942571 - 2⁵ = 9942539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9942571.

It is not a weakly prime, because it can be changed into another prime (9942577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4971285 + 4971286.

It is an arithmetic number, because the mean of its divisors is an integer number (4971286).

Almost surely, 2^9942571 is an apocalyptic number.

9942571 is a deficient number, since it is larger than the sum of its proper divisors (1).

9942571 is an equidigital number, since it uses as much as digits as its factorization.

9942571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 9942571 is about 3153.1842635660. The cubic root of 9942571 is about 215.0302535397.

The spelling of 9942571 in words is "nine million, nine hundred forty-two thousand, five hundred seventy-one".