420112312020 has 96 divisors (see below), whose sum is σ = 1308994525440. Its totient is φ = 111860369280.

The previous prime is 420112312001. The next prime is 420112312027. The reversal of 420112312020 is 20213211024.

It is a happy number.

420112312020 is a `hidden beast` number, since 420 + 1 + 12 + 31 + 202 + 0 = 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 = 420112311984 and 420112312002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420112312027) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 231552 + ... + 945431.

It is an arithmetic number, because the mean of its divisors is an integer number (13635359640).

Almost surely, 2^420112312020 is an apocalyptic number.

It is an amenable number.

420112312020 is an abundant number, since it is smaller than the sum of its proper divisors (888882213420).

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

420112312020 is a wasteful number, since it uses less digits than its factorization.

420112312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177662 (or 1177654 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 420112312020 its reverse (20213211024), we get a palindrome (440325523044).

The spelling of 420112312020 in words is "four hundred twenty billion, one hundred twelve million, three hundred twelve thousand, twenty".