42421043 has 4 divisors (see below), whose sum is σ = 48481200. Its totient is φ = 36360888.

The previous prime is 42421037. The next prime is 42421063. The reversal of 42421043 is 34012424.

42421043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42421043 - 2¹² = 42416947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42421003) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3030068 + ... + 3030081.

It is an arithmetic number, because the mean of its divisors is an integer number (12120300).

Almost surely, 2^42421043 is an apocalyptic number.

42421043 is a deficient number, since it is larger than the sum of its proper divisors (6060157).

42421043 is an equidigital number, since it uses as much as digits as its factorization.

42421043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060156.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 42421043 is about 6513.1438645250. The cubic root of 42421043 is about 348.7603574302.

Adding to 42421043 its reverse (34012424), we get a palindrome (76433467).

The spelling of 42421043 in words is "forty-two million, four hundred twenty-one thousand, forty-three".