42054321 has 24 divisors (see below), whose sum is σ = 60056640. Its totient is φ = 26144160.

The previous prime is 42054319. The next prime is 42054323. The reversal of 42054321 is 12345024.

It is an interprime number because it is at equal distance from previous prime (42054319) and next prime (42054323).

It is not a de Polignac number, because 42054321 - 2¹ = 42054319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42054323) 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 23 ways as a sum of consecutive naturals, for example, 83356 + ... + 83858.

It is an arithmetic number, because the mean of its divisors is an integer number (2502360).

Almost surely, 2^42054321 is an apocalyptic number.

It is an amenable number.

42054321 is a deficient number, since it is larger than the sum of its proper divisors (18002319).

42054321 is a wasteful number, since it uses less digits than its factorization.

42054321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42054321 is about 6484.9303003193. The cubic root of 42054321 is about 347.7524580580.

Adding to 42054321 its reverse (12345024), we get a palindrome (54399345).

The spelling of 42054321 in words is "forty-two million, fifty-four thousand, three hundred twenty-one".