12102042408 has 64 divisors (see below), whose sum is σ = 31182624000. Its totient is φ = 3911922432.

The previous prime is 12102042401. The next prime is 12102042409. The reversal of 12102042408 is 80424020121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12102042401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73738 + ... + 172166.

It is an arithmetic number, because the mean of its divisors is an integer number (487228500).

Almost surely, 2^12102042408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12102042408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15591312000).

12102042408 is an abundant number, since it is smaller than the sum of its proper divisors (19080581592).

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

12102042408 is a wasteful number, since it uses less digits than its factorization.

12102042408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98594 (or 98590 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 12102042408 its reverse (80424020121), we get a palindrome (92526062529).

The spelling of 12102042408 in words is "twelve billion, one hundred two million, forty-two thousand, four hundred eight".