420123020 has 12 divisors (see below), whose sum is σ = 882258384. Its totient is φ = 168049200.

The previous prime is 420123017. The next prime is 420123097. The reversal of 420123020 is 20321024.

It is a junction number, because it is equal to n+sod(n) for n = 420122986 and 420123004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10503056 + ... + 10503095.

It is an arithmetic number, because the mean of its divisors is an integer number (73521532).

Almost surely, 2^420123020 is an apocalyptic number.

It is an amenable number.

420123020 is an abundant number, since it is smaller than the sum of its proper divisors (462135364).

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

420123020 is a wasteful number, since it uses less digits than its factorization.

420123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21006160 (or 21006158 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 420123020 is about 20496.9026928461. The cubic root of 420123020 is about 748.9603491303.

Adding to 420123020 its reverse (20321024), we get a palindrome (440444044).

The spelling of 420123020 in words is "four hundred twenty million, one hundred twenty-three thousand, twenty".