161426 has 4 divisors (see below), whose sum is σ = 242142. Its totient is φ = 80712.

The previous prime is 161411. The next prime is 161453. The reversal of 161426 is 624161.

It is a happy number.

161426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 160801 + 625 = 401^2 + 25^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161398 and 161407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40355 + ... + 40358.

2¹⁶¹⁴²⁶ is an apocalyptic number.

161426 is a deficient number, since it is larger than the sum of its proper divisors (80716).

161426 is an equidigital number, since it uses as much as digits as its factorization.

161426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80715.

The product of its digits is 288, while the sum is 20.

The square root of 161426 is about 401.7785459678. The cubic root of 161426 is about 54.4491571961.

Adding to 161426 its reverse (624161), we get a palindrome (785587).

It can be divided in two parts, 161 and 426, that multiplied together give a palindrome (68586).

The spelling of 161426 in words is "one hundred sixty-one thousand, four hundred twenty-six".