1242822 has 32 divisors (see below), whose sum is σ = 2875392. Its totient is φ = 350784.

The previous prime is 1242817. The next prime is 1242823. The reversal of 1242822 is 2282421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5218 + ... + 5450.

It is an arithmetic number, because the mean of its divisors is an integer number (89856).

2^1242822 is an apocalyptic number.

1242822 is an abundant number, since it is smaller than the sum of its proper divisors (1632570).

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

1242822 is a wasteful number, since it uses less digits than its factorization.

1242822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372.

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

The square root of 1242822 is about 1114.8192678636. The cubic root of 1242822 is about 107.5151447925.

The spelling of 1242822 in words is "one million, two hundred forty-two thousand, eight hundred twenty-two".