42423001 has 4 divisors (see below), whose sum is σ = 43004212. Its totient is φ = 41841792.

The previous prime is 42422981. The next prime is 42423011. The reversal of 42423001 is 10032424.

42423001 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 can be written as a sum of positive squares in 2 ways, for example, as 21483225 + 20939776 = 4635^2 + 4576^2 .

It is a cyclic number.

It is not a de Polignac number, because 42423001 - 2⁹ = 42422489 is a prime.

It is a super-2 number, since 2×42423001² = 3599422027692002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42423011) 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, 290496 + ... + 290641.

It is an arithmetic number, because the mean of its divisors is an integer number (10751053).

Almost surely, 2^42423001 is an apocalyptic number.

It is an amenable number.

42423001 is a deficient number, since it is larger than the sum of its proper divisors (581211).

42423001 is an equidigital number, since it uses as much as digits as its factorization.

42423001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581210.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 42423001 is about 6513.2941742255. The cubic root of 42423001 is about 348.7657231813.

Adding to 42423001 its reverse (10032424), we get a palindrome (52455425).

The spelling of 42423001 in words is "forty-two million, four hundred twenty-three thousand, one".