423515640042 has 32 divisors (see below), whose sum is σ = 1026704583360. Its totient is φ = 128338072560.

The previous prime is 423515640029. The next prime is 423515640077. The reversal of 423515640042 is 240046515324.

423515640042 is a `hidden beast` number, since 4 + 2 + 3 + 5 + 1 + 5 + 640 + 0 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 423515639979 and 423515640006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356494053 + ... + 356495240.

It is an arithmetic number, because the mean of its divisors is an integer number (32084518230).

Almost surely, 2^423515640042 is an apocalyptic number.

423515640042 is an abundant number, since it is smaller than the sum of its proper divisors (603188943318).

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

423515640042 is a wasteful number, since it uses less digits than its factorization.

423515640042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712989315 (or 712989309 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 423515640042 in words is "four hundred twenty-three billion, five hundred fifteen million, six hundred forty thousand, forty-two".