1286242 has 4 divisors (see below), whose sum is σ = 1929366. Its totient is φ = 643120.

The previous prime is 1286239. The next prime is 1286261. The reversal of 1286242 is 2426821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 900601 + 385641 = 949^2 + 621^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321559 + ... + 321562.

2^1286242 is an apocalyptic number.

1286242 is a deficient number, since it is larger than the sum of its proper divisors (643124).

1286242 is an equidigital number, since it uses as much as digits as its factorization.

1286242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643123.

The product of its digits is 1536, while the sum is 25.

The square root of 1286242 is about 1134.1260952822. The cubic root of 1286242 is about 108.7529122398.

The spelling of 1286242 in words is "one million, two hundred eighty-six thousand, two hundred forty-two".