12042142242 has 16 divisors (see below), whose sum is σ = 25936921920. Its totient is φ = 3705274512.

The previous prime is 12042142201. The next prime is 12042142247. The reversal of 12042142242 is 24224124021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12042142247) 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 7 ways as a sum of consecutive naturals, for example, 77193142 + ... + 77193297.

It is an arithmetic number, because the mean of its divisors is an integer number (1621057620).

Almost surely, 2^12042142242 is an apocalyptic number.

12042142242 is an abundant number, since it is smaller than the sum of its proper divisors (13894779678).

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

12042142242 is a wasteful number, since it uses less digits than its factorization.

12042142242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154386457.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 12042142242 its reverse (24224124021), we get a palindrome (36266266263).

The spelling of 12042142242 in words is "twelve billion, forty-two million, one hundred forty-two thousand, two hundred forty-two".