202120334040 has 32 divisors (see below), whose sum is σ = 606361002480. Its totient is φ = 53898755712.

The previous prime is 202120334029. The next prime is 202120334057. The reversal of 202120334040 is 40433021202.

It is a junction number, because it is equal to n+sod(n) for n = 202120333998 and 202120334016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842167939 + ... + 842168178.

Almost surely, 2^202120334040 is an apocalyptic number.

202120334040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120334040 is an abundant number, since it is smaller than the sum of its proper divisors (404240668440).

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

202120334040 is a wasteful number, since it uses less digits than its factorization.

202120334040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684336131 (or 1684336127 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 202120334040 its reverse (40433021202), we get a palindrome (242553355242).

The spelling of 202120334040 in words is "two hundred two billion, one hundred twenty million, three hundred thirty-four thousand, forty".