1283140 has 12 divisors (see below), whose sum is σ = 2694636. Its totient is φ = 513248.

The previous prime is 1283137. The next prime is 1283159. The reversal of 1283140 is 413821.

It can be written as a sum of positive squares in 2 ways, for example, as 876096 + 407044 = 936^2 + 638^2 .

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32059 + ... + 32098.

It is an arithmetic number, because the mean of its divisors is an integer number (224553).

2^1283140 is an apocalyptic number.

1283140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1283140 is an abundant number, since it is smaller than the sum of its proper divisors (1411496).

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

1283140 is a wasteful number, since it uses less digits than its factorization.

1283140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64166 (or 64164 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1283140 is about 1132.7576969502. The cubic root of 1283140 is about 108.6654162393.

Adding to 1283140 its reverse (413821), we get a palindrome (1696961).

The spelling of 1283140 in words is "one million, two hundred eighty-three thousand, one hundred forty".