266429 has 4 divisors (see below), whose sum is σ = 268284. Its totient is φ = 264576.

The previous prime is 266417. The next prime is 266447. The reversal of 266429 is 924662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 924662 = 2 ⋅462331.

It can be written as a sum of positive squares in 2 ways, for example, as 182329 + 84100 = 427^2 + 290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266449) 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, 692 + ... + 1005.

It is an arithmetic number, because the mean of its divisors is an integer number (67071).

2²⁶⁶⁴²⁹ is an apocalyptic number.

It is an amenable number.

266429 is a deficient number, since it is larger than the sum of its proper divisors (1855).

266429 is a wasteful number, since it uses less digits than its factorization.

266429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854.

The product of its digits is 5184, while the sum is 29.

The square root of 266429 is about 516.1676084374. The cubic root of 266429 is about 64.3468312364.

It can be divided in two parts, 26642 and 9, that multiplied together give a triangular number (239778 = T₆₉₂).

The spelling of 266429 in words is "two hundred sixty-six thousand, four hundred twenty-nine".