166429 has 2 divisors, whose sum is σ = 166430. Its totient is φ = 166428.

The previous prime is 166417. The next prime is 166457. The reversal of 166429 is 924661.

It is an a-pointer prime, because the next prime (166457) can be obtained adding 166429 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156025 + 10404 = 395^2 + 102^2 .

It is an emirp because it is prime and its reverse (924661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166429 - 2⁷ = 166301 is a prime.

It is a super-2 number, since 2×166429² = 55397224082, which contains 22 as substring.

166429 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 166397 and 166406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83214 + 83215.

It is an arithmetic number, because the mean of its divisors is an integer number (83215).

2¹⁶⁶⁴²⁹ is an apocalyptic number.

It is an amenable number.

166429 is a deficient number, since it is larger than the sum of its proper divisors (1).

166429 is an equidigital number, since it uses as much as digits as its factorization.

166429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 166429 is about 407.9571055883. The cubic root of 166429 is about 55.0059497696.

It can be divided in two parts, 166 and 429, that added together give a palindrome (595).

The spelling of 166429 in words is "one hundred sixty-six thousand, four hundred twenty-nine".