201042020420 has 24 divisors (see below), whose sum is σ = 422206198848. Its totient is φ = 80413388000.

The previous prime is 201042020381. The next prime is 201042020471. The reversal of 201042020420 is 24020240102.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 298145 + ... + 700695.

It is an arithmetic number, because the mean of its divisors is an integer number (17591924952).

Almost surely, 2^201042020420 is an apocalyptic number.

201042020420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201042020420 is an abundant number, since it is smaller than the sum of its proper divisors (221164178428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201042020420 is a wasteful number, since it uses less digits than its factorization.

201042020420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427531 (or 427529 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 201042020420 its reverse (24020240102), we get a palindrome (225062260522).

The spelling of 201042020420 in words is "two hundred one billion, forty-two million, twenty thousand, four hundred twenty".