1287374 has 16 divisors (see below), whose sum is σ = 2125440. Its totient is φ = 579960.

The previous prime is 1287373. The next prime is 1287401. The reversal of 1287374 is 4737821.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1287374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287371) 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, 3407 + ... + 3765.

It is an arithmetic number, because the mean of its divisors is an integer number (132840).

2^1287374 is an apocalyptic number.

1287374 is a deficient number, since it is larger than the sum of its proper divisors (838066).

1287374 is a wasteful number, since it uses less digits than its factorization.

1287374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535.

The product of its digits is 9408, while the sum is 32.

The square root of 1287374 is about 1134.6250481987. The cubic root of 1287374 is about 108.7848067561.

It can be divided in two parts, 1287 and 374, that added together give a palindrome (1661).

The spelling of 1287374 in words is "one million, two hundred eighty-seven thousand, three hundred seventy-four".