1222842 has 8 divisors (see below), whose sum is σ = 2445696. Its totient is φ = 407612.

The previous prime is 1222831. The next prime is 1222847. The reversal of 1222842 is 2482221.

It is a happy number.

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

1222842 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1222847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101898 + ... + 101909.

It is an arithmetic number, because the mean of its divisors is an integer number (305712).

2^1222842 is an apocalyptic number.

1222842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222842 is a wasteful number, since it uses less digits than its factorization.

1222842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203812.

The product of its digits is 512, while the sum is 21.

The square root of 1222842 is about 1105.8218663058. The cubic root of 1222842 is about 106.9358802959.

The spelling of 1222842 in words is "one million, two hundred twenty-two thousand, eight hundred forty-two".