20424443342 has 4 divisors (see below), whose sum is σ = 30636665016. Its totient is φ = 10212221670.

The previous prime is 20424443327. The next prime is 20424443359. The reversal of 20424443342 is 24334442402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24334442402 = 2 ⋅12167221201.

It is a junction number, because it is equal to n+sod(n) for n = 20424443299 and 20424443308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106110834 + ... + 5106110837.

It is an arithmetic number, because the mean of its divisors is an integer number (7659166254).

Almost surely, 2^20424443342 is an apocalyptic number.

20424443342 is a deficient number, since it is larger than the sum of its proper divisors (10212221674).

20424443342 is a wasteful number, since it uses less digits than its factorization.

20424443342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10212221673.

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 20424443342 its reverse (24334442402), we get a palindrome (44758885744).

The spelling of 20424443342 in words is "twenty billion, four hundred twenty-four million, four hundred forty-three thousand, three hundred forty-two".