12042111402 has 48 divisors (see below), whose sum is σ = 27461502432. Its totient is φ = 3954115440.

The previous prime is 12042111371. The next prime is 12042111407. The reversal of 12042111402 is 20411124021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12042111407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152349 + ... + 217472.

It is an arithmetic number, because the mean of its divisors is an integer number (572114634).

Almost surely, 2^12042111402 is an apocalyptic number.

12042111402 is an abundant number, since it is smaller than the sum of its proper divisors (15419391030).

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

12042111402 is an equidigital number, since it uses as much as digits as its factorization.

12042111402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369905 (or 369893 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12042111402 its reverse (20411124021), we get a palindrome (32453235423).

The spelling of 12042111402 in words is "twelve billion, forty-two million, one hundred eleven thousand, four hundred two".