420423012 has 36 divisors (see below), whose sum is σ = 1064241360. Its totient is φ = 139942512.

The previous prime is 420423007. The next prime is 420423077. The reversal of 420423012 is 210324024.

420423012 is a `hidden beast` number, since 420 + 4 + 230 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18703 + ... + 34505.

It is an arithmetic number, because the mean of its divisors is an integer number (29562260).

Almost surely, 2^420423012 is an apocalyptic number.

It is an amenable number.

420423012 is an abundant number, since it is smaller than the sum of its proper divisors (643818348).

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

420423012 is a wasteful number, since it uses less digits than its factorization.

420423012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16552 (or 16547 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 420423012 is about 20504.2193706564. The cubic root of 420423012 is about 749.1385736383.

Adding to 420423012 its reverse (210324024), we get a palindrome (630747036).

It can be divided in two parts, 42042 and 3012, that added together give a palindrome (45054).

The spelling of 420423012 in words is "four hundred twenty million, four hundred twenty-three thousand, twelve".