166342426 has 8 divisors (see below), whose sum is σ = 249571764. Its totient is φ = 83151840.

The previous prime is 166342411. The next prime is 166342427. The reversal of 166342426 is 624243661.

It can be written as a sum of positive squares in 2 ways, for example, as 146531025 + 19811401 = 12105^2 + 4451^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 166342391 and 166342400.

It is not an unprimeable number, because it can be changed into a prime (166342427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6366 + ... + 19318.

Almost surely, 2^166342426 is an apocalyptic number.

166342426 is a deficient number, since it is larger than the sum of its proper divisors (83229338).

166342426 is a wasteful number, since it uses less digits than its factorization.

166342426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19376.

The product of its digits is 41472, while the sum is 34.

The square root of 166342426 is about 12897.3805867703. The cubic root of 166342426 is about 549.9641034423.

The spelling of 166342426 in words is "one hundred sixty-six million, three hundred forty-two thousand, four hundred twenty-six".