42331121 has 4 divisors (see below), whose sum is σ = 48378432. Its totient is φ = 36283812.

The previous prime is 42331117. The next prime is 42331141. The reversal of 42331121 is 12113324.

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 42331121 - 2² = 42331117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42331121.

It is not an unprimeable number, because it can be changed into a prime (42331111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3023645 + ... + 3023658.

It is an arithmetic number, because the mean of its divisors is an integer number (12094608).

Almost surely, 2^42331121 is an apocalyptic number.

It is an amenable number.

42331121 is a deficient number, since it is larger than the sum of its proper divisors (6047311).

42331121 is an equidigital number, since it uses as much as digits as its factorization.

42331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6047310.

The product of its digits is 144, while the sum is 17.

The square root of 42331121 is about 6506.2370845213. The cubic root of 42331121 is about 348.5137548630.

Adding to 42331121 its reverse (12113324), we get a palindrome (54444445).

The spelling of 42331121 in words is "forty-two million, three hundred thirty-one thousand, one hundred twenty-one".