202120420413 has 16 divisors (see below), whose sum is σ = 270215321600. Its totient is φ = 134386387200.

The previous prime is 202120420409. The next prime is 202120420421. The reversal of 202120420413 is 314024021202.

It is not a de Polignac number, because 202120420413 - 2² = 202120420409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202120420413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120420423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6080388 + ... + 6113538.

It is an arithmetic number, because the mean of its divisors is an integer number (16888457600).

Almost surely, 2^202120420413 is an apocalyptic number.

It is an amenable number.

202120420413 is a deficient number, since it is larger than the sum of its proper divisors (68094901187).

202120420413 is a wasteful number, since it uses less digits than its factorization.

202120420413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38532.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 202120420413 its reverse (314024021202), we get a palindrome (516144441615).

The spelling of 202120420413 in words is "two hundred two billion, one hundred twenty million, four hundred twenty thousand, four hundred thirteen".