420401223 has 24 divisors (see below), whose sum is σ = 663162240. Its totient is φ = 254514960.

The previous prime is 420401207. The next prime is 420401227. The reversal of 420401223 is 322104024.

420401223 is a `hidden beast` number, since 42 + 0 + 401 + 223 = 666.

It is not a de Polignac number, because 420401223 - 2⁴ = 420401207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420401196 and 420401205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420401227) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 127368 + ... + 130626.

It is an arithmetic number, because the mean of its divisors is an integer number (27631760).

Almost surely, 2^420401223 is an apocalyptic number.

420401223 is a deficient number, since it is larger than the sum of its proper divisors (242761017).

420401223 is a wasteful number, since it uses less digits than its factorization.

420401223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4579 (or 4576 counting only the distinct ones).

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

The square root of 420401223 is about 20503.6880341074. The cubic root of 420401223 is about 749.1256317029.

Adding to 420401223 its reverse (322104024), we get a palindrome (742505247).

The spelling of 420401223 in words is "four hundred twenty million, four hundred one thousand, two hundred twenty-three".