20442104143242 has 16 divisors (see below), whose sum is σ = 40885981589280. Its totient is φ = 6813739163952.

The previous prime is 20442104143141. The next prime is 20442104143267. The reversal of 20442104143242 is 24234140124402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73737733 + ... + 74014440.

It is an arithmetic number, because the mean of its divisors is an integer number (2555373849330).

Almost surely, 2^{20442104143242} is an apocalyptic number.

20442104143242 is an abundant number, since it is smaller than the sum of its proper divisors (20443877446038).

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

20442104143242 is a wasteful number, since it uses less digits than its factorization.

20442104143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147775237.

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 20442104143242 its reverse (24234140124402), we get a palindrome (44676244267644).

The spelling of 20442104143242 in words is "twenty trillion, four hundred forty-two billion, one hundred four million, one hundred forty-three thousand, two hundred forty-two".