170263421 has 8 divisors (see below), whose sum is σ = 172570944. Its totient is φ = 167967360.

The previous prime is 170263417. The next prime is 170263433. The reversal of 170263421 is 124362071.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 170263421 - 2² = 170263417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170268421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29456 + ... + 34758.

It is an arithmetic number, because the mean of its divisors is an integer number (21571368).

Almost surely, 2^170263421 is an apocalyptic number.

It is an amenable number.

170263421 is a deficient number, since it is larger than the sum of its proper divisors (2307523).

170263421 is an equidigital number, since it uses as much as digits as its factorization.

170263421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5731.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 170263421 is about 13048.5026344022. The cubic root of 170263421 is about 554.2518078793.

The spelling of 170263421 in words is "one hundred seventy million, two hundred sixty-three thousand, four hundred twenty-one".