1242442 has 8 divisors (see below), whose sum is σ = 1907136. Its totient is φ = 606732.

The previous prime is 1242421. The next prime is 1242457. The reversal of 1242442 is 2442421.

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

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 3 ways as a sum of consecutive naturals, for example, 7138 + ... + 7309.

It is an arithmetic number, because the mean of its divisors is an integer number (238392).

2^1242442 is an apocalyptic number.

1242442 is a deficient number, since it is larger than the sum of its proper divisors (664694).

1242442 is a wasteful number, since it uses less digits than its factorization.

1242442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14492.

The product of its digits is 512, while the sum is 19.

The square root of 1242442 is about 1114.6488236211. The cubic root of 1242442 is about 107.5041858835.

Adding to 1242442 its reverse (2442421), we get a palindrome (3684863).

The spelling of 1242442 in words is "one million, two hundred forty-two thousand, four hundred forty-two".