1242444 has 36 divisors (see below), whose sum is σ = 3373944. Its totient is φ = 354816.

The previous prime is 1242421. The next prime is 1242457. The reversal of 1242444 is 4442421.

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

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1242444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469 + ... + 1644.

2^1242444 is an apocalyptic number.

1242444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1242444 is an abundant number, since it is smaller than the sum of its proper divisors (2131500).

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

1242444 is a wasteful number, since it uses less digits than its factorization.

1242444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134 (or 2125 counting only the distinct ones).

The product of its digits is 1024, while the sum is 21.

The square root of 1242444 is about 1114.6497207643. The cubic root of 1242444 is about 107.5042435678.

Adding to 1242444 its reverse (4442421), we get a palindrome (5684865).

The spelling of 1242444 in words is "one million, two hundred forty-two thousand, four hundred forty-four".