170421098 has 8 divisors (see below), whose sum is σ = 256013508. Its totient is φ = 85083264.

The previous prime is 170421071. The next prime is 170421103. The reversal of 170421098 is 890124071.

It can be written as a sum of positive squares in 2 ways, for example, as 150234049 + 20187049 = 12257^2 + 4493^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 61961 + ... + 64652.

Almost surely, 2^170421098 is an apocalyptic number.

170421098 is a deficient number, since it is larger than the sum of its proper divisors (85592410).

170421098 is a wasteful number, since it uses less digits than its factorization.

170421098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127288.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 170421098 is about 13054.5431938463. The cubic root of 170421098 is about 554.4228483338.

The spelling of 170421098 in words is "one hundred seventy million, four hundred twenty-one thousand, ninety-eight".