20340042130 has 16 divisors (see below), whose sum is σ = 36695482560. Its totient is φ = 8117482032.

The previous prime is 20340042109. The next prime is 20340042131. The reversal of 20340042130 is 3124004302.

It is a junction number, because it is equal to n+sod(n) for n = 20340042098 and 20340042107.

It is not an unprimeable number, because it can be changed into a prime (20340042131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2312244 + ... + 2321023.

It is an arithmetic number, because the mean of its divisors is an integer number (2293467660).

Almost surely, 2^20340042130 is an apocalyptic number.

20340042130 is a deficient number, since it is larger than the sum of its proper divisors (16355440430).

20340042130 is a wasteful number, since it uses less digits than its factorization.

20340042130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633713.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20340042130 its reverse (3124004302), we get a palindrome (23464046432).

The spelling of 20340042130 in words is "twenty billion, three hundred forty million, forty-two thousand, one hundred thirty".