1260855 has 12 divisors (see below), whose sum is σ = 2185560. Its totient is φ = 672432.

The previous prime is 1260851. The next prime is 1260877. The reversal of 1260855 is 5580621.

1260855 is a `hidden beast` number, since 1 + 2 + 608 + 55 = 666.

It is not a de Polignac number, because 1260855 - 2² = 1260851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13965 + ... + 14054.

It is an arithmetic number, because the mean of its divisors is an integer number (182130).

2^1260855 is an apocalyptic number.

1260855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1260855 is a deficient number, since it is larger than the sum of its proper divisors (924705).

1260855 is a wasteful number, since it uses less digits than its factorization.

1260855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28030 (or 28027 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1260855 is about 1122.8779987158. The cubic root of 1260855 is about 108.0326547346.

Adding to 1260855 its product of nonzero digits (2400), we get a triangular number (1263255 = T₁₅₈₉).

The spelling of 1260855 in words is "one million, two hundred sixty thousand, eight hundred fifty-five".