1287962 has 8 divisors (see below), whose sum is σ = 2080596. Its totient is φ = 594432.

The previous prime is 1287961. The next prime is 1287967. The reversal of 1287962 is 2697821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1229881 + 58081 = 1109^2 + 241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1287962² = 3317692226888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1287961) 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 3 ways as a sum of consecutive naturals, for example, 24743 + ... + 24794.

2^1287962 is an apocalyptic number.

1287962 is a deficient number, since it is larger than the sum of its proper divisors (792634).

1287962 is a wasteful number, since it uses less digits than its factorization.

1287962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49552.

The product of its digits is 12096, while the sum is 35.

The square root of 1287962 is about 1134.8841350552. The cubic root of 1287962 is about 108.8013664945.

The spelling of 1287962 in words is "one million, two hundred eighty-seven thousand, nine hundred sixty-two".