20520000042422 has 4 divisors (see below), whose sum is σ = 30780000063636. Its totient is φ = 10260000021210.

The previous prime is 20520000042371. The next prime is 20520000042439. The reversal of 20520000042422 is 22424000002502.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5130000010604 + ... + 5130000010607.

It is an arithmetic number, because the mean of its divisors is an integer number (7695000015909).

Almost surely, 2^{20520000042422} is an apocalyptic number.

20520000042422 is a deficient number, since it is larger than the sum of its proper divisors (10260000021214).

20520000042422 is a wasteful number, since it uses less digits than its factorization.

20520000042422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260000021213.

The product of its (nonzero) digits is 2560, while the sum is 23.

Adding to 20520000042422 its reverse (22424000002502), we get a palindrome (42944000044924).

The spelling of 20520000042422 in words is "twenty trillion, five hundred twenty billion, forty-two thousand, four hundred twenty-two".