420020012 has 12 divisors (see below), whose sum is σ = 750674400. Its totient is φ = 205541616.

The previous prime is 420020009. The next prime is 420020039. The reversal of 420020012 is 210020024.

It is a junction number, because it is equal to n+sod(n) for n = 420019975 and 420020002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116887 + ... + 1117262.

It is an arithmetic number, because the mean of its divisors is an integer number (62556200).

Almost surely, 2^420020012 is an apocalyptic number.

It is an amenable number.

420020012 is a deficient number, since it is larger than the sum of its proper divisors (330654388).

420020012 is a wasteful number, since it uses less digits than its factorization.

420020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234200 (or 2234198 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 420020012 is about 20494.3897689099. The cubic root of 420020012 is about 748.8991327642.

Adding to 420020012 its reverse (210020024), we get a palindrome (630040036).

The spelling of 420020012 in words is "four hundred twenty million, twenty thousand, twelve".