42004253 has 4 divisors (see below), whose sum is σ = 42019068. Its totient is φ = 41989440.

The previous prime is 42004219. The next prime is 42004301. The reversal of 42004253 is 35240024.

42004253 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 23020804 + 18983449 = 4798^2 + 4357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42004253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004153) 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, 1676 + ... + 9317.

It is an arithmetic number, because the mean of its divisors is an integer number (10504767).

Almost surely, 2^42004253 is an apocalyptic number.

It is an amenable number.

42004253 is a deficient number, since it is larger than the sum of its proper divisors (14815).

42004253 is a wasteful number, since it uses less digits than its factorization.

42004253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14814.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 42004253 is about 6481.0688161753. The cubic root of 42004253 is about 347.6143970619.

Adding to 42004253 its reverse (35240024), we get a palindrome (77244277).

The spelling of 42004253 in words is "forty-two million, four thousand, two hundred fifty-three".