423304542 has 24 divisors (see below), whose sum is σ = 951129816. Its totient is φ = 141101352.

The previous prime is 423304529. The next prime is 423304547. The reversal of 423304542 is 245403324.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423304547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 435013 + ... + 435984.

It is an arithmetic number, because the mean of its divisors is an integer number (39630409).

Almost surely, 2^423304542 is an apocalyptic number.

423304542 is an abundant number, since it is smaller than the sum of its proper divisors (527825274).

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

423304542 is an equidigital number, since it uses as much as digits as its factorization.

423304542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871014 (or 871002 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 423304542 is about 20574.3661384744. The cubic root of 423304542 is about 750.8461809447.

Adding to 423304542 its reverse (245403324), we get a palindrome (668707866).

The spelling of 423304542 in words is "four hundred twenty-three million, three hundred four thousand, five hundred forty-two".