421202485287828 has 72 divisors (see below), whose sum is σ = 1097335384104960. Its totient is φ = 136152901684800.

The previous prime is 421202485287823. The next prime is 421202485287847. The reversal of 421202485287828 is 828782584202124.

It is a happy number.

421202485287828 is a `hidden beast` number, since 4 + 2 + 1 + 2 + 0 + 24 + 8 + 528 + 7 + 82 + 8 = 666.

It is a super-2 number, since 2×421202485287828² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421202485287823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1141731348 + ... + 1142100203.

It is an arithmetic number, because the mean of its divisors is an integer number (15240769223680).

Almost surely, 2^{421202485287828} is an apocalyptic number.

It is an amenable number.

421202485287828 is an abundant number, since it is smaller than the sum of its proper divisors (676132898817132).

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

421202485287828 is a wasteful number, since it uses less digits than its factorization.

421202485287828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283831717 (or 2283831712 counting only the distinct ones).

The product of its (nonzero) digits is 73400320, while the sum is 63.

The spelling of 421202485287828 in words is "four hundred twenty-one trillion, two hundred two billion, four hundred eighty-five million, two hundred eighty-seven thousand, eight hundred twenty-eight".