423218941 has 4 divisors (see below), whose sum is σ = 427974300. Its totient is φ = 418463584.

The previous prime is 423218921. The next prime is 423218959. The reversal of 423218941 is 149812324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 85026841 + 338192100 = 9221^2 + 18390^2 .

It is a cyclic number.

It is not a de Polignac number, because 423218941 - 2⁹ = 423218429 is a prime.

It is a super-2 number, since 2×423218941² = 358228544042322962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423218897 and 423218906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423218921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2377546 + ... + 2377723.

It is an arithmetic number, because the mean of its divisors is an integer number (106993575).

Almost surely, 2^423218941 is an apocalyptic number.

It is an amenable number.

423218941 is a deficient number, since it is larger than the sum of its proper divisors (4755359).

423218941 is an equidigital number, since it uses as much as digits as its factorization.

423218941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4755358.

The product of its digits is 13824, while the sum is 34.

The square root of 423218941 is about 20572.2857504945. The cubic root of 423218941 is about 750.7955652843.

The spelling of 423218941 in words is "four hundred twenty-three million, two hundred eighteen thousand, nine hundred forty-one".