20420424122 has 8 divisors (see below), whose sum is σ = 35006441376. Its totient is φ = 8751610332.

The previous prime is 20420424109. The next prime is 20420424127. The reversal of 20420424122 is 22142402402.

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

It is not an unprimeable number, because it can be changed into a prime (20420424127) 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 in 3 ways as a sum of consecutive naturals, for example, 729300848 + ... + 729300875.

It is an arithmetic number, because the mean of its divisors is an integer number (4375805172).

Almost surely, 2^20420424122 is an apocalyptic number.

20420424122 is a deficient number, since it is larger than the sum of its proper divisors (14586017254).

20420424122 is a wasteful number, since it uses less digits than its factorization.

20420424122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458601732.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 20420424122 its reverse (22142402402), we get a palindrome (42562826524).

The spelling of 20420424122 in words is "twenty billion, four hundred twenty million, four hundred twenty-four thousand, one hundred twenty-two".