423440432442 has 12 divisors (see below), whose sum is σ = 917454270330. Its totient is φ = 141146810808.

The previous prime is 423440432383. The next prime is 423440432483. The reversal of 423440432442 is 244234044324.

423440432442 is a `hidden beast` number, since 4 + 2 + 3 + 4 + 404 + 3 + 244 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 303093190521 + 120347241921 = 550539^2 + 346911^2 .

It is a junction number, because it is equal to n+sod(n) for n = 423440432397 and 423440432406.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11762234217 + ... + 11762234252.

Almost surely, 2^423440432442 is an apocalyptic number.

423440432442 is an abundant number, since it is smaller than the sum of its proper divisors (494013837888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423440432442 is a wasteful number, since it uses less digits than its factorization.

423440432442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23524468477 (or 23524468474 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 36.

Adding to 423440432442 its reverse (244234044324), we get a palindrome (667674476766).

The spelling of 423440432442 in words is "four hundred twenty-three billion, four hundred forty million, four hundred thirty-two thousand, four hundred forty-two".