261342474 has 16 divisors (see below), whose sum is σ = 522913440. Its totient is φ = 87076080.

The previous prime is 261342467. The next prime is 261342503. The reversal of 261342474 is 474243162.

261342474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7764 + ... + 24144.

It is an arithmetic number, because the mean of its divisors is an integer number (32682090).

Almost surely, 2^261342474 is an apocalyptic number.

261342474 is an abundant number, since it is smaller than the sum of its proper divisors (261570966).

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

261342474 is a wasteful number, since it uses less digits than its factorization.

261342474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19045.

The product of its digits is 32256, while the sum is 33.

The square root of 261342474 is about 16166.0902508925. The cubic root of 261342474 is about 639.3470505370.

The spelling of 261342474 in words is "two hundred sixty-one million, three hundred forty-two thousand, four hundred seventy-four".