12102402142 has 16 divisors (see below), whose sum is σ = 18468559872. Its totient is φ = 5946979480.

The previous prime is 12102402133. The next prime is 12102402149. The reversal of 12102402142 is 24120420121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102402149) 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, 159148 + ... + 222559.

It is an arithmetic number, because the mean of its divisors is an integer number (1154284992).

Almost surely, 2^12102402142 is an apocalyptic number.

12102402142 is a deficient number, since it is larger than the sum of its proper divisors (6366157730).

12102402142 is a wasteful number, since it uses less digits than its factorization.

12102402142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381983.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12102402142 its reverse (24120420121), we get a palindrome (36222822263).

The spelling of 12102402142 in words is "twelve billion, one hundred two million, four hundred two thousand, one hundred forty-two".