1280422 has 32 divisors (see below), whose sum is σ = 2336544. Its totient is φ = 522720.

The previous prime is 1280417. The next prime is 1280431. The reversal of 1280422 is 2240821.

It is a self number, because there is not a number n which added to its sum of digits gives 1280422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34588 + ... + 34624.

It is an arithmetic number, because the mean of its divisors is an integer number (73017).

2^1280422 is an apocalyptic number.

1280422 is a deficient number, since it is larger than the sum of its proper divisors (1056122).

1280422 is a wasteful number, since it uses less digits than its factorization.

1280422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 63 counting only the distinct ones).

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

The square root of 1280422 is about 1131.5573339429. The cubic root of 1280422 is about 108.5886354802.

The spelling of 1280422 in words is "one million, two hundred eighty thousand, four hundred twenty-two".