1242012242 has 16 divisors (see below), whose sum is σ = 1880452800. Its totient is φ = 615218448.

The previous prime is 1242012223. The next prime is 1242012253. The reversal of 1242012242 is 2422102421.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 103259 + ... + 114657.

It is an arithmetic number, because the mean of its divisors is an integer number (117528300).

Almost surely, 2^1242012242 is an apocalyptic number.

1242012242 is a deficient number, since it is larger than the sum of its proper divisors (638440558).

1242012242 is a wasteful number, since it uses less digits than its factorization.

1242012242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11905.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1242012242 is about 35242.1940576917. The cubic root of 1242012242 is about 1074.9178929898.

Adding to 1242012242 its reverse (2422102421), we get a palindrome (3664114663).

The spelling of 1242012242 in words is "one billion, two hundred forty-two million, twelve thousand, two hundred forty-two".