420212323 has 4 divisors (see below), whose sum is σ = 438482448. Its totient is φ = 401942200.

The previous prime is 420212281. The next prime is 420212327. The reversal of 420212323 is 323212024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420212323 - 2⁹ = 420211811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420212323.

It is not an unprimeable number, because it can be changed into a prime (420212327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9135028 + ... + 9135073.

It is an arithmetic number, because the mean of its divisors is an integer number (109620612).

Almost surely, 2^420212323 is an apocalyptic number.

420212323 is a deficient number, since it is larger than the sum of its proper divisors (18270125).

420212323 is a wasteful number, since it uses less digits than its factorization.

420212323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18270124.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 420212323 is about 20499.0810281827. The cubic root of 420212323 is about 749.0134126890.

Adding to 420212323 its reverse (323212024), we get a palindrome (743424347).

It can be divided in two parts, 42021 and 2323, that added together give a palindrome (44344).

The spelling of 420212323 in words is "four hundred twenty million, two hundred twelve thousand, three hundred twenty-three".