261424267 has 8 divisors (see below), whose sum is σ = 281669360. Its totient is φ = 241198560.

The previous prime is 261424253. The next prime is 261424291. The reversal of 261424267 is 762424162.

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

It is a cyclic number.

It is not a de Polignac number, because 261424267 - 2¹⁵ = 261391499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261424297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35917 + ... + 42577.

It is an arithmetic number, because the mean of its divisors is an integer number (35208670).

Almost surely, 2^261424267 is an apocalyptic number.

261424267 is a deficient number, since it is larger than the sum of its proper divisors (20245093).

261424267 is a wasteful number, since it uses less digits than its factorization.

261424267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9693.

The product of its digits is 32256, while the sum is 34.

The square root of 261424267 is about 16168.6198235966. The cubic root of 261424267 is about 639.4137429220.

The spelling of 261424267 in words is "two hundred sixty-one million, four hundred twenty-four thousand, two hundred sixty-seven".