1268155 has 16 divisors (see below), whose sum is σ = 1831680. Its totient is φ = 823392.

The previous prime is 1268147. The next prime is 1268167. The reversal of 1268155 is 5518621.

It is a cyclic number.

It is not a de Polignac number, because 1268155 - 2³ = 1268147 is a prime.

It is a plaindrome in base 16.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 289 + ... + 1618.

It is an arithmetic number, because the mean of its divisors is an integer number (114480).

2^1268155 is an apocalyptic number.

1268155 is a deficient number, since it is larger than the sum of its proper divisors (563525).

1268155 is a wasteful number, since it uses less digits than its factorization.

1268155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938.

The product of its digits is 2400, while the sum is 28.

The square root of 1268155 is about 1126.1238830608. The cubic root of 1268155 is about 108.2407466662.

It can be divided in two parts, 126 and 8155, that added together give a square (8281 = 91²).

The spelling of 1268155 in words is "one million, two hundred sixty-eight thousand, one hundred fifty-five".