265434 has 32 divisors (see below), whose sum is σ = 592704. Its totient is φ = 78720.

The previous prime is 265427. The next prime is 265451. The reversal of 265434 is 434562.

It is a d-powerful number, because it can be written as 2⁷ + 6 + 4 + 5⁵ + 3³ + 4⁹ .

It is a Curzon number.

It is an unprimeable number.

265434 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3157 + ... + 3239.

It is an arithmetic number, because the mean of its divisors is an integer number (18522).

2²⁶⁵⁴³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296352).

265434 is an abundant number, since it is smaller than the sum of its proper divisors (327270).

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

265434 is a wasteful number, since it uses less digits than its factorization.

265434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142.

The product of its digits is 2880, while the sum is 24.

The square root of 265434 is about 515.2028726628. The cubic root of 265434 is about 64.2666285494.

Adding to 265434 its reverse (434562), we get a palindrome (699996).

It can be divided in two parts, 26 and 5434, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 265434 in words is "two hundred sixty-five thousand, four hundred thirty-four".