20344021342 has 4 divisors (see below), whose sum is σ = 30516032016. Its totient is φ = 10172010670.

The previous prime is 20344021319. The next prime is 20344021349. The reversal of 20344021342 is 24312044302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344021349) 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 as a sum of consecutive naturals, namely, 5086005334 + ... + 5086005337.

It is an arithmetic number, because the mean of its divisors is an integer number (7629008004).

Almost surely, 2^20344021342 is an apocalyptic number.

20344021342 is a deficient number, since it is larger than the sum of its proper divisors (10172010674).

20344021342 is a wasteful number, since it uses less digits than its factorization.

20344021342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10172010673.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20344021342 its reverse (24312044302), we get a palindrome (44656065644).

The spelling of 20344021342 in words is "twenty billion, three hundred forty-four million, twenty-one thousand, three hundred forty-two".