Search a number
42231533 = 130332411

42231533 has 4 divisors (see below), whose sum is σ = 42265248. Its totient is φ = 42197820.

The previous prime is 42231499. The next prime is 42231559. The reversal of 42231533 is 33513224.

Adding to 42231533 its reverse (33513224), we get a palindrome (75744757).

42231533 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42231533 - 210 = 42230509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42231499 and 42231508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231733) 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, 14903 + ... + 17508.

It is an arithmetic number, because the mean of its divisors is an integer number (10566312).

Almost surely, 242231533 is an apocalyptic number.

It is an amenable number.

42231533 is a deficient number, since it is larger than the sum of its proper divisors (33715).

42231533 is a wasteful number, since it uses less digits than its factorization.

42231533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33714.

The product of its digits is 2160, while the sum is 23.

The square root of 42231533 is about 6498.5793062792. The cubic root of 42231533 is about 348.2402363072.

The spelling of 42231533 in words is "forty-two million, two hundred thirty-one thousand, five hundred thirty-three".

Divisors: 1 1303 32411 42231533