1280242 has 4 divisors (see below), whose sum is σ = 1920366. Its totient is φ = 640120.

The previous prime is 1280231. The next prime is 1280267. The reversal of 1280242 is 2420821.

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., 657721 + 622521 = 811^2 + 789^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320059 + ... + 320062.

2^1280242 is an apocalyptic number.

1280242 is a deficient number, since it is larger than the sum of its proper divisors (640124).

1280242 is an equidigital number, since it uses as much as digits as its factorization.

1280242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640123.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1280242 is about 1131.4777947446. The cubic root of 1280242 is about 108.5835468270.

The spelling of 1280242 in words is "one million, two hundred eighty thousand, two hundred forty-two".