20340220342 has 16 divisors (see below), whose sum is σ = 32860935072. Its totient is φ = 9386749440.

The previous prime is 20340220331. The next prime is 20340220349. The reversal of 20340220342 is 24302204302.

It is a super-2 number, since 2×20340220342² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340220349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226167 + ... + 303037.

It is an arithmetic number, because the mean of its divisors is an integer number (2053808442).

Almost surely, 2^20340220342 is an apocalyptic number.

20340220342 is a deficient number, since it is larger than the sum of its proper divisors (12520714730).

20340220342 is a wasteful number, since it uses less digits than its factorization.

20340220342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87063.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20340220342 its reverse (24302204302), we get a palindrome (44642424644).

The spelling of 20340220342 in words is "twenty billion, three hundred forty million, two hundred twenty thousand, three hundred forty-two".