20104211442 has 64 divisors (see below), whose sum is σ = 47224848384. Its totient is φ = 5585215680.

The previous prime is 20104211437. The next prime is 20104211483. The reversal of 20104211442 is 24411240102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3202767 + ... + 3209037.

It is an arithmetic number, because the mean of its divisors is an integer number (737888256).

Almost surely, 2^20104211442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20104211442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23612424192).

20104211442 is an abundant number, since it is smaller than the sum of its proper divisors (27120636942).

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

20104211442 is a wasteful number, since it uses less digits than its factorization.

20104211442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8383.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20104211442 its reverse (24411240102), we get a palindrome (44515451544).

The spelling of 20104211442 in words is "twenty billion, one hundred four million, two hundred eleven thousand, four hundred forty-two".