329042261 has 4 divisors (see below), whose sum is σ = 337067724. Its totient is φ = 321016800.

The previous prime is 329042251. The next prime is 329042269. The reversal of 329042261 is 162240923.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69639025 + 259403236 = 8345^2 + 16106^2 .

It is a cyclic number.

It is not a de Polignac number, because 329042261 - 2¹⁴ = 329025877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329042269) 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, 4012670 + ... + 4012751.

It is an arithmetic number, because the mean of its divisors is an integer number (84266931).

Almost surely, 2^329042261 is an apocalyptic number.

It is an amenable number.

329042261 is a deficient number, since it is larger than the sum of its proper divisors (8025463).

329042261 is an equidigital number, since it uses as much as digits as its factorization.

329042261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8025462.

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

The square root of 329042261 is about 18139.5220719841. The cubic root of 329042261 is about 690.3731518004.

The spelling of 329042261 in words is "three hundred twenty-nine million, forty-two thousand, two hundred sixty-one".