170423047 has 2 divisors, whose sum is σ = 170423048. Its totient is φ = 170423046.

The previous prime is 170423017. The next prime is 170423051. The reversal of 170423047 is 740324071.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 170423047 - 2⁷ = 170422919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170423017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85211523 + 85211524.

It is an arithmetic number, because the mean of its divisors is an integer number (85211524).

Almost surely, 2^170423047 is an apocalyptic number.

170423047 is a deficient number, since it is larger than the sum of its proper divisors (1).

170423047 is an equidigital number, since it uses as much as digits as its factorization.

170423047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 170423047 is about 13054.6178419745. The cubic root of 170423047 is about 554.4249618553.

The spelling of 170423047 in words is "one hundred seventy million, four hundred twenty-three thousand, forty-seven".