202120401420 has 144 divisors (see below), whose sum is σ = 731148687360. Its totient is φ = 44190292608.

The previous prime is 202120401361. The next prime is 202120401437. The reversal of 202120401420 is 24104021202.

202120401420 is a `hidden beast` number, since 20 + 21 + 204 + 0 + 1 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 202120401393 and 202120401402.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3458260 + ... + 3516219.

It is an arithmetic number, because the mean of its divisors is an integer number (5077421440).

Almost surely, 2^202120401420 is an apocalyptic number.

202120401420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120401420 is an abundant number, since it is smaller than the sum of its proper divisors (529028285940).

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

202120401420 is a wasteful number, since it uses less digits than its factorization.

202120401420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6974524 (or 6974519 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 202120401420 its reverse (24104021202), we get a palindrome (226224422622).

The spelling of 202120401420 in words is "two hundred two billion, one hundred twenty million, four hundred one thousand, four hundred twenty".