20340042104 has 8 divisors (see below), whose sum is σ = 38137578960. Its totient is φ = 10170021048.

The previous prime is 20340042101. The next prime is 20340042109. The reversal of 20340042104 is 40124004302.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340042101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271252624 + ... + 1271252639.

It is an arithmetic number, because the mean of its divisors is an integer number (4767197370).

Almost surely, 2^20340042104 is an apocalyptic number.

It is an amenable number.

20340042104 is a deficient number, since it is larger than the sum of its proper divisors (17797536856).

20340042104 is a wasteful number, since it uses less digits than its factorization.

20340042104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542505269 (or 2542505265 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20340042104 its reverse (40124004302), we get a palindrome (60464046406).

The spelling of 20340042104 in words is "twenty billion, three hundred forty million, forty-two thousand, one hundred four".