42654321 has 12 divisors (see below), whose sum is σ = 61685520. Its totient is φ = 28402200.

The previous prime is 42654319. The next prime is 42654371. The reversal of 42654321 is 12345624.

42654321 is a `hidden beast` number, since 4 + 2 + 654 + 3 + 2 + 1 = 666.

42654321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42654321 - 2¹ = 42654319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42654371) 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 11 ways as a sum of consecutive naturals, for example, 6846 + ... + 11496.

It is an arithmetic number, because the mean of its divisors is an integer number (5140460).

Almost surely, 2^42654321 is an apocalyptic number.

It is an amenable number.

42654321 is a deficient number, since it is larger than the sum of its proper divisors (19031199).

42654321 is a wasteful number, since it uses less digits than its factorization.

42654321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5676 (or 5673 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 42654321 is about 6531.0275608054. The cubic root of 42654321 is about 349.3984797270.

Adding to 42654321 its reverse (12345624), we get a palindrome (54999945).

The spelling of 42654321 in words is "forty-two million, six hundred fifty-four thousand, three hundred twenty-one".