42423020 has 24 divisors (see below), whose sum is σ = 89286624. Its totient is φ = 16931456.

The previous prime is 42423011. The next prime is 42423049. The reversal of 42423020 is 2032424.

42423020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42423020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7952 + ... + 12168.

It is an arithmetic number, because the mean of its divisors is an integer number (3720276).

Almost surely, 2^42423020 is an apocalyptic number.

It is an amenable number.

42423020 is an abundant number, since it is smaller than the sum of its proper divisors (46863604).

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

42423020 is a wasteful number, since it uses less digits than its factorization.

42423020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4729 (or 4727 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42423020 is about 6513.2956327807. The cubic root of 42423020 is about 348.7657752485.

Adding to 42423020 its reverse (2032424), we get a palindrome (44455444).

The spelling of 42423020 in words is "forty-two million, four hundred twenty-three thousand, twenty".