1268145 has 12 divisors (see below), whose sum is σ = 2198196. Its totient is φ = 676320.

The previous prime is 1268143. The next prime is 1268147. The reversal of 1268145 is 5418621.

It is an interprime number because it is at equal distance from previous prime (1268143) and next prime (1268147).

It can be written as a sum of positive squares in 2 ways, for example, as 848241 + 419904 = 921^2 + 648^2 .

It is not a de Polignac number, because 1268145 - 2¹ = 1268143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1268143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14046 + ... + 14135.

It is an arithmetic number, because the mean of its divisors is an integer number (183183).

2^1268145 is an apocalyptic number.

1268145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1268145 is a deficient number, since it is larger than the sum of its proper divisors (930051).

1268145 is a wasteful number, since it uses less digits than its factorization.

1268145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28192 (or 28189 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 1268145 is about 1126.1194430432. The cubic root of 1268145 is about 108.2404621557.

The spelling of 1268145 in words is "one million, two hundred sixty-eight thousand, one hundred forty-five".