171406243 has 2 divisors, whose sum is σ = 171406244. Its totient is φ = 171406242.

The previous prime is 171406231. The next prime is 171406267. The reversal of 171406243 is 342604171.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171406243 is a prime.

It is not a weakly prime, because it can be changed into another prime (171406273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85703121 + 85703122.

It is an arithmetic number, because the mean of its divisors is an integer number (85703122).

Almost surely, 2^171406243 is an apocalyptic number.

171406243 is a deficient number, since it is larger than the sum of its proper divisors (1).

171406243 is an equidigital number, since it uses as much as digits as its factorization.

171406243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 171406243 is about 13092.2207054418. The cubic root of 171406243 is about 555.4891048624.

The spelling of 171406243 in words is "one hundred seventy-one million, four hundred six thousand, two hundred forty-three".