261141207 has 8 divisors (see below), whose sum is σ = 348524400. Its totient is φ = 173926080.

The previous prime is 261141191. The next prime is 261141239. The reversal of 261141207 is 702141162.

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

It is not a de Polignac number, because 261141207 - 2⁴ = 261141191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261141707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38344 + ... + 44637.

It is an arithmetic number, because the mean of its divisors is an integer number (43565550).

Almost surely, 2^261141207 is an apocalyptic number.

261141207 is a deficient number, since it is larger than the sum of its proper divisors (87383193).

261141207 is a wasteful number, since it uses less digits than its factorization.

261141207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84033.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 261141207 is about 16159.8640773987. The cubic root of 261141207 is about 639.1828821590.

Adding to 261141207 its sum of digits (24), we get a triangular number (261141231 = T₂₂₈₅₃).

Adding to 261141207 its reverse (702141162), we get a palindrome (963282369).

The spelling of 261141207 in words is "two hundred sixty-one million, one hundred forty-one thousand, two hundred seven".