20442340421230 has 64 divisors (see below), whose sum is σ = 46340847641088. Its totient is φ = 6319206472320.

The previous prime is 20442340421219. The next prime is 20442340421287. The reversal of 20442340421230 is 3212404324402.

It is a junction number, because it is equal to n+sod(n) for n = 20442340421192 and 20442340421201.

It is a congruent number.

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, 261171456 + ... + 261249715.

It is an arithmetic number, because the mean of its divisors is an integer number (724075744392).

Almost surely, 2^{20442340421230} is an apocalyptic number.

20442340421230 is an abundant number, since it is smaller than the sum of its proper divisors (25898507219858).

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

20442340421230 is a wasteful number, since it uses less digits than its factorization.

20442340421230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522421241.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 20442340421230 its reverse (3212404324402), we get a palindrome (23654744745632).

The spelling of 20442340421230 in words is "twenty trillion, four hundred forty-two billion, three hundred forty million, four hundred twenty-one thousand, two hundred thirty".