20412002142 has 192 divisors, whose sum is σ = 55380049920. Its totient is φ = 5305608000.

The previous prime is 20412002129. The next prime is 20412002159. The reversal of 20412002142 is 24120021402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5298517 + ... + 5302367.

It is an arithmetic number, because the mean of its divisors is an integer number (288437760).

Almost surely, 2^20412002142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20412002142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27690024960).

20412002142 is an abundant number, since it is smaller than the sum of its proper divisors (34968047778).

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

20412002142 is a wasteful number, since it uses less digits than its factorization.

20412002142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3979 (or 3976 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20412002142 its reverse (24120021402), we get a palindrome (44532023544).

The spelling of 20412002142 in words is "twenty billion, four hundred twelve million, two thousand, one hundred forty-two".