42594421 has 4 divisors (see below), whose sum is σ = 43073100. Its totient is φ = 42115744.

The previous prime is 42594407. The next prime is 42594451. The reversal of 42594421 is 12449524.

42594421 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.

It can be written as a sum of positive squares in 2 ways, for example, as 24147396 + 18447025 = 4914^2 + 4295^2 .

It is a cyclic number.

It is not a de Polignac number, because 42594421 - 2⁵ = 42594389 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 (42594451) 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, 239206 + ... + 239383.

It is an arithmetic number, because the mean of its divisors is an integer number (10768275).

Almost surely, 2^42594421 is an apocalyptic number.

It is an amenable number.

42594421 is a deficient number, since it is larger than the sum of its proper divisors (478679).

42594421 is an equidigital number, since it uses as much as digits as its factorization.

42594421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478678.

The product of its digits is 11520, while the sum is 31.

The square root of 42594421 is about 6526.4401475843. The cubic root of 42594421 is about 349.2348482118.

The spelling of 42594421 in words is "forty-two million, five hundred ninety-four thousand, four hundred twenty-one".