20400314240442 has 8 divisors (see below), whose sum is σ = 40800628480896. Its totient is φ = 6800104746812.

The previous prime is 20400314240437. The next prime is 20400314240497. The reversal of 20400314240442 is 24404241300402.

It is a sphenic number, since it is the product of 3 distinct primes.

20400314240442 is an admirable number.

It is a super-2 number, since 2×20400314240442² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1700026186698 + ... + 1700026186709.

It is an arithmetic number, because the mean of its divisors is an integer number (5100078560112).

Almost surely, 2^{20400314240442} is an apocalyptic number.

20400314240442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20400314240442 is a wasteful number, since it uses less digits than its factorization.

20400314240442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400052373412.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 20400314240442 its reverse (24404241300402), we get a palindrome (44804555540844).

The spelling of 20400314240442 in words is "twenty trillion, four hundred billion, three hundred fourteen million, two hundred forty thousand, four hundred forty-two".