20340134441442 has 80 divisors (see below), whose sum is σ = 46055172173472. Its totient is φ = 6709050944640.

The previous prime is 20340134441383. The next prime is 20340134441467. The reversal of 20340134441442 is 24414443104302.

20340134441442 is a `hidden beast` number, since 2 + 0 + 3 + 40 + 134 + 4 + 41 + 442 = 666.

It is a super-2 number, since 2×20340134441442² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20340134441397 and 20340134441406.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14605293 + ... + 15937215.

Almost surely, 2^{20340134441442} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20340134441442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23027586086736).

20340134441442 is an abundant number, since it is smaller than the sum of its proper divisors (25715037732030).

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

20340134441442 is a wasteful number, since it uses less digits than its factorization.

20340134441442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332925 (or 1332916 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

Adding to 20340134441442 its reverse (24414443104302), we get a palindrome (44754577545744).

The spelling of 20340134441442 in words is "twenty trillion, three hundred forty billion, one hundred thirty-four million, four hundred forty-one thousand, four hundred forty-two".