20013344042 has 4 divisors (see below), whose sum is σ = 30020016066. Its totient is φ = 10006672020.

The previous prime is 20013344017. The next prime is 20013344137. The reversal of 20013344042 is 24044331002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24044331002 = 2 ⋅12022165501.

It can be written as a sum of positive squares in only one way, i.e., 18343722721 + 1669621321 = 135439^2 + 40861^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20013343999 and 20013344017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003336009 + ... + 5003336012.

Almost surely, 2^20013344042 is an apocalyptic number.

20013344042 is a deficient number, since it is larger than the sum of its proper divisors (10006672024).

20013344042 is a wasteful number, since it uses less digits than its factorization.

20013344042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006672023.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20013344042 its reverse (24044331002), we get a palindrome (44057675044).

The spelling of 20013344042 in words is "twenty billion, thirteen million, three hundred forty-four thousand, forty-two".