42108253 has 4 divisors (see below), whose sum is σ = 45936288. Its totient is φ = 38280220.

The previous prime is 42108233. The next prime is 42108259. The reversal of 42108253 is 35280124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42108253 - 2¹³ = 42100061 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 (42108259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1914001 + ... + 1914022.

It is an arithmetic number, because the mean of its divisors is an integer number (11484072).

Almost surely, 2^42108253 is an apocalyptic number.

It is an amenable number.

42108253 is a deficient number, since it is larger than the sum of its proper divisors (3828035).

42108253 is a wasteful number, since it uses less digits than its factorization.

42108253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828034.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 42108253 is about 6489.0872239476. The cubic root of 42108253 is about 347.9010513810.

Adding to 42108253 its reverse (35280124), we get a palindrome (77388377).

The spelling of 42108253 in words is "forty-two million, one hundred eight thousand, two hundred fifty-three".