20420055202 has 8 divisors (see below), whose sum is σ = 30649006800. Its totient is φ = 10203719604.

The previous prime is 20420055191. The next prime is 20420055203. The reversal of 20420055202 is 20255002402.

It is a happy number.

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 (20420055203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3149952 + ... + 3156427.

It is an arithmetic number, because the mean of its divisors is an integer number (3831125850).

Almost surely, 2^20420055202 is an apocalyptic number.

20420055202 is a deficient number, since it is larger than the sum of its proper divisors (10228951598).

20420055202 is a wasteful number, since it uses less digits than its factorization.

20420055202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6308000.

The product of its (nonzero) digits is 1600, while the sum is 22.

Adding to 20420055202 its reverse (20255002402), we get a palindrome (40675057604).

The spelling of 20420055202 in words is "twenty billion, four hundred twenty million, fifty-five thousand, two hundred two".