261360126 has 24 divisors (see below), whose sum is σ = 571576824. Its totient is φ = 86305200.

The previous prime is 261360089. The next prime is 261360133. The reversal of 261360126 is 621063162.

261360126 is a `hidden beast` number, since 26 + 13 + 601 + 26 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 261360126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65925 + ... + 69776.

It is an arithmetic number, because the mean of its divisors is an integer number (23815701).

Almost surely, 2^261360126 is an apocalyptic number.

261360126 is an abundant number, since it is smaller than the sum of its proper divisors (310216698).

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

261360126 is a wasteful number, since it uses less digits than its factorization.

261360126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135816 (or 135813 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 261360126 is about 16166.6361992840. The cubic root of 261360126 is about 639.3614448040.

The spelling of 261360126 in words is "two hundred sixty-one million, three hundred sixty thousand, one hundred twenty-six".