171121039 has 2 divisors, whose sum is σ = 171121040. Its totient is φ = 171121038.

The previous prime is 171121033. The next prime is 171121079. The reversal of 171121039 is 930121171.

171121039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 171121039 - 2²³ = 162732431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171121033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85560519 + 85560520.

It is an arithmetic number, because the mean of its divisors is an integer number (85560520).

Almost surely, 2^171121039 is an apocalyptic number.

171121039 is a deficient number, since it is larger than the sum of its proper divisors (1).

171121039 is an equidigital number, since it uses as much as digits as its factorization.

171121039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 171121039 is about 13081.3240537799. The cubic root of 171121039 is about 555.1808398058.

The spelling of 171121039 in words is "one hundred seventy-one million, one hundred twenty-one thousand, thirty-nine".