1268140 has 24 divisors (see below), whose sum is σ = 2686320. Its totient is φ = 502848.

The previous prime is 1268119. The next prime is 1268143. The reversal of 1268140 is 418621.

It is a plaindrome in base 16.

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 7 ways as a sum of consecutive naturals, for example, 3066 + ... + 3454.

It is an arithmetic number, because the mean of its divisors is an integer number (111930).

2^1268140 is an apocalyptic number.

1268140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1268140 is an abundant number, since it is smaller than the sum of its proper divisors (1418180).

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

1268140 is a wasteful number, since it uses less digits than its factorization.

1268140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1268140 is about 1126.1172230279. The cubic root of 1268140 is about 108.2403198999.

It can be divided in two parts, 12681 and 40, that added together give a palindrome (12721).

The spelling of 1268140 in words is "one million, two hundred sixty-eight thousand, one hundred forty".