1284136 has 32 divisors (see below), whose sum is σ = 2874240. Its totient is φ = 525888.

The previous prime is 1284131. The next prime is 1284169. The reversal of 1284136 is 6314821.

It is a self number, because there is not a number n which added to its sum of digits gives 1284136.

It is not an unprimeable number, because it can be changed into a prime (1284131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790 + ... + 1786.

It is an arithmetic number, because the mean of its divisors is an integer number (89820).

2^1284136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1284136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1437120).

1284136 is an abundant number, since it is smaller than the sum of its proper divisors (1590104).

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

1284136 is a wasteful number, since it uses less digits than its factorization.

1284136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1029 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 1284136 is about 1133.1972467316. The cubic root of 1284136 is about 108.6935250877.

Adding to 1284136 its reverse (6314821), we get a palindrome (7598957).

It can be divided in two parts, 12 and 84136, that added together give a palindrome (84148).

The spelling of 1284136 in words is "one million, two hundred eighty-four thousand, one hundred thirty-six".