166422426 has 8 divisors (see below), whose sum is σ = 332844864. Its totient is φ = 55474140.

The previous prime is 166422397. The next prime is 166422433. The reversal of 166422426 is 624224661.

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

166422426 is an admirable number.

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 in 3 ways as a sum of consecutive naturals, for example, 13868530 + ... + 13868541.

It is an arithmetic number, because the mean of its divisors is an integer number (41605608).

Almost surely, 2^166422426 is an apocalyptic number.

166422426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166422426 is a wasteful number, since it uses less digits than its factorization.

166422426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27737076.

The product of its digits is 27648, while the sum is 33.

The square root of 166422426 is about 12900.4816189164. The cubic root of 166422426 is about 550.0522550902.

It can be divided in two parts, 1664 and 22426, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 166422426 in words is "one hundred sixty-six million, four hundred twenty-two thousand, four hundred twenty-six".