12142405042 has 16 divisors (see below), whose sum is σ = 19289172672. Its totient is φ = 5720560560.

The previous prime is 12142405003. The next prime is 12142405049. The reversal of 12142405042 is 24050424121.

It is a junction number, because it is equal to n+sod(n) for n = 12142404998 and 12142405016.

It is not an unprimeable number, because it can be changed into a prime (12142405049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1966809 + ... + 1972972.

It is an arithmetic number, because the mean of its divisors is an integer number (1205573292).

Almost surely, 2^12142405042 is an apocalyptic number.

12142405042 is a deficient number, since it is larger than the sum of its proper divisors (7146767630).

12142405042 is a wasteful number, since it uses less digits than its factorization.

12142405042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939873.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 12142405042 its reverse (24050424121), we get a palindrome (36192829163).

The spelling of 12142405042 in words is "twelve billion, one hundred forty-two million, four hundred five thousand, forty-two".