166210426 has 8 divisors (see below), whose sum is σ = 257912820. Its totient is φ = 80239488.

The previous prime is 166210393. The next prime is 166210427. The reversal of 166210426 is 624012661.

166210426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 153784801 + 12425625 = 12401^2 + 3525^2 .

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

It is a super-2 number, since 2×166210426² = 55251811422202952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166210394 and 166210403.

It is not an unprimeable number, because it can be changed into a prime (166210427) 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, 1432791 + ... + 1432906.

Almost surely, 2^166210426 is an apocalyptic number.

166210426 is a deficient number, since it is larger than the sum of its proper divisors (91702394).

166210426 is a wasteful number, since it uses less digits than its factorization.

166210426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865728.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 166210426 is about 12892.2622529950. The cubic root of 166210426 is about 549.8185914116.

The spelling of 166210426 in words is "one hundred sixty-six million, two hundred ten thousand, four hundred twenty-six".