139132571 has 2 divisors, whose sum is σ = 139132572. Its totient is φ = 139132570.

The previous prime is 139132559. The next prime is 139132577. The reversal of 139132571 is 175231931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139132571 - 2²² = 134938267 is a prime.

It is not a weakly prime, because it can be changed into another prime (139132577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69566285 + 69566286.

It is an arithmetic number, because the mean of its divisors is an integer number (69566286).

Almost surely, 2^139132571 is an apocalyptic number.

139132571 is a deficient number, since it is larger than the sum of its proper divisors (1).

139132571 is an equidigital number, since it uses as much as digits as its factorization.

139132571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 32.

The square root of 139132571 is about 11795.4470453646. The cubic root of 139132571 is about 518.1747781587.

The spelling of 139132571 in words is "one hundred thirty-nine million, one hundred thirty-two thousand, five hundred seventy-one".