170131426 has 4 divisors (see below), whose sum is σ = 255197142. Its totient is φ = 85065712.

The previous prime is 170131411. The next prime is 170131459. The reversal of 170131426 is 624131071.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 109307025 + 60824401 = 10455^2 + 7799^2 .

It is a super-2 number, since 2×170131426² = 57889404225586952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 170131426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42532855 + ... + 42532858.

Almost surely, 2^170131426 is an apocalyptic number.

170131426 is a deficient number, since it is larger than the sum of its proper divisors (85065716).

170131426 is an equidigital number, since it uses as much as digits as its factorization.

170131426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85065715.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 170131426 is about 13043.4437937226. The cubic root of 170131426 is about 554.1085448104.

Adding to 170131426 its reverse (624131071), we get a palindrome (794262497).

The spelling of 170131426 in words is "one hundred seventy million, one hundred thirty-one thousand, four hundred twenty-six".