1244642 has 8 divisors (see below), whose sum is σ = 2133696. Its totient is φ = 533412.

The previous prime is 1244629. The next prime is 1244647. The reversal of 1244642 is 2464421.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1244647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44438 + ... + 44465.

It is an arithmetic number, because the mean of its divisors is an integer number (266712).

2^1244642 is an apocalyptic number.

1244642 is a deficient number, since it is larger than the sum of its proper divisors (889054).

1244642 is an equidigital number, since it uses as much as digits as its factorization.

1244642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88912.

The product of its digits is 1536, while the sum is 23.

The square root of 1244642 is about 1115.6352450510. The cubic root of 1244642 is about 107.5676012515.

The spelling of 1244642 in words is "one million, two hundred forty-four thousand, six hundred forty-two".