261360442 has 48 divisors (see below), whose sum is σ = 473190912. Its totient is φ = 105945120.

The previous prime is 261360439. The next prime is 261360457. The reversal of 261360442 is 244063162.

261360442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 261360442.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1510668 + ... + 1510840.

It is an arithmetic number, because the mean of its divisors is an integer number (9858144).

Almost surely, 2^261360442 is an apocalyptic number.

261360442 is a deficient number, since it is larger than the sum of its proper divisors (211830470).

261360442 is a wasteful number, since it uses less digits than its factorization.

261360442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 261360442 is about 16166.6459724953. The cubic root of 261360442 is about 639.3617024793.

The spelling of 261360442 in words is "two hundred sixty-one million, three hundred sixty thousand, four hundred forty-two".