1288342 has 16 divisors (see below), whose sum is σ = 2127312. Its totient is φ = 580320.

The previous prime is 1288337. The next prime is 1288349. The reversal of 1288342 is 2438821.

It is a self number, because there is not a number n which added to its sum of digits gives 1288342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288349) 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, 3268 + ... + 3640.

It is an arithmetic number, because the mean of its divisors is an integer number (132957).

2^1288342 is an apocalyptic number.

1288342 is a deficient number, since it is larger than the sum of its proper divisors (838970).

1288342 is a wasteful number, since it uses less digits than its factorization.

1288342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543.

The product of its digits is 3072, while the sum is 28.

The square root of 1288342 is about 1135.0515406800. The cubic root of 1288342 is about 108.8120656854.

The spelling of 1288342 in words is "one million, two hundred eighty-eight thousand, three hundred forty-two".