20434304042 has 8 divisors (see below), whose sum is σ = 30954936132. Its totient is φ = 10115992000.

The previous prime is 20434304027. The next prime is 20434304063. The reversal of 20434304042 is 24040343402.

It can be written as a sum of positive squares in 2 ways, for example, as 19074095881 + 1360208161 = 138109^2 + 36881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50579759 + ... + 50580162.

Almost surely, 2^20434304042 is an apocalyptic number.

20434304042 is a deficient number, since it is larger than the sum of its proper divisors (10520632090).

20434304042 is a wasteful number, since it uses less digits than its factorization.

20434304042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101160024.

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 20434304042 its reverse (24040343402), we get a palindrome (44474647444).

The spelling of 20434304042 in words is "twenty billion, four hundred thirty-four million, three hundred four thousand, forty-two".