420220823 has 8 divisors (see below), whose sum is σ = 458734080. Its totient is φ = 381759480.

The previous prime is 420220793. The next prime is 420220831. The reversal of 420220823 is 328022024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420220823 - 2²² = 416026519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420220873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5048 + ... + 29426.

It is an arithmetic number, because the mean of its divisors is an integer number (57341760).

Almost surely, 2^420220823 is an apocalyptic number.

420220823 is a deficient number, since it is larger than the sum of its proper divisors (38513257).

420220823 is a wasteful number, since it uses less digits than its factorization.

420220823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25957.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 420220823 is about 20499.2883535014. The cubic root of 420220823 is about 749.0184629701.

Adding to 420220823 its reverse (328022024), we get a palindrome (748242847).

The spelling of 420220823 in words is "four hundred twenty million, two hundred twenty thousand, eight hundred twenty-three".