261140 has 24 divisors (see below), whose sum is σ = 598752. Its totient is φ = 94880.

The previous prime is 261127. The next prime is 261167. The reversal of 261140 is 41162.

It is a congruent number.

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, 374 + ... + 813.

It is an arithmetic number, because the mean of its divisors is an integer number (24948).

2²⁶¹¹⁴⁰ is an apocalyptic number.

261140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261140 is an abundant number, since it is smaller than the sum of its proper divisors (337612).

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

261140 is a wasteful number, since it uses less digits than its factorization.

261140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 261140 is about 511.0185906599. The cubic root of 261140 is about 63.9181897385.

The spelling of 261140 in words is "two hundred sixty-one thousand, one hundred forty".