442421202231 has 20 divisors (see below), whose sum is σ = 661465340184. Its totient is φ = 294695528400.

The previous prime is 442421202203. The next prime is 442421202241. The reversal of 442421202231 is 132202124244.

It is a happy number.

442421202231 is a `hidden beast` number, since 4 + 4 + 2 + 421 + 2 + 0 + 2 + 231 = 666.

It is not a de Polignac number, because 442421202231 - 2⁵ = 442421202199 is a prime.

It is a super-2 number, since 2×442421202231² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 442421202195 and 442421202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442421202241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2237340 + ... + 2427041.

Almost surely, 2^442421202231 is an apocalyptic number.

442421202231 is a deficient number, since it is larger than the sum of its proper divisors (219044137953).

442421202231 is a wasteful number, since it uses less digits than its factorization.

442421202231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4665564 (or 4665555 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 442421202231 its reverse (132202124244), we get a palindrome (574623326475).

The spelling of 442421202231 in words is "four hundred forty-two billion, four hundred twenty-one million, two hundred two thousand, two hundred thirty-one".