423020204340 has 48 divisors (see below), whose sum is σ = 1187755954560. Its totient is φ = 112491160960.

The previous prime is 423020204323. The next prime is 423020204351. The reversal of 423020204340 is 43402020324.

It is a self number, because there is not a number n which added to its sum of digits gives 423020204340.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9797871 + ... + 9840950.

It is an arithmetic number, because the mean of its divisors is an integer number (24744915720).

Almost surely, 2^423020204340 is an apocalyptic number.

It is an amenable number.

423020204340 is an abundant number, since it is smaller than the sum of its proper divisors (764735750220).

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

423020204340 is a wasteful number, since it uses less digits than its factorization.

423020204340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19639192 (or 19639190 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 423020204340 its reverse (43402020324), we get a palindrome (466422224664).

The spelling of 423020204340 in words is "four hundred twenty-three billion, twenty million, two hundred four thousand, three hundred forty".