171256426 has 32 divisors (see below), whose sum is σ = 297017280. Its totient is φ = 73315200.

The previous prime is 171256417. The next prime is 171256441. The reversal of 171256426 is 624652171.

It is a junction number, because it is equal to n+sod(n) for n = 171256391 and 171256400.

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 15 ways as a sum of consecutive naturals, for example, 22885 + ... + 29431.

It is an arithmetic number, because the mean of its divisors is an integer number (9281790).

Almost surely, 2^171256426 is an apocalyptic number.

171256426 is a deficient number, since it is larger than the sum of its proper divisors (125760854).

171256426 is a wasteful number, since it uses less digits than its factorization.

171256426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6630.

The product of its digits is 20160, while the sum is 34.

The square root of 171256426 is about 13086.4978508385. The cubic root of 171256426 is about 555.3272166136.

The spelling of 171256426 in words is "one hundred seventy-one million, two hundred fifty-six thousand, four hundred twenty-six".