42412321 has 4 divisors (see below), whose sum is σ = 48471232. Its totient is φ = 36353412.

The previous prime is 42412303. The next prime is 42412367. The reversal of 42412321 is 12321424.

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 42412321 - 2¹¹ = 42410273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42412121) 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, 3029445 + ... + 3029458.

It is an arithmetic number, because the mean of its divisors is an integer number (12117808).

Almost surely, 2^42412321 is an apocalyptic number.

It is an amenable number.

42412321 is a deficient number, since it is larger than the sum of its proper divisors (6058911).

42412321 is an equidigital number, since it uses as much as digits as its factorization.

42412321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6058910.

The product of its digits is 384, while the sum is 19.

The square root of 42412321 is about 6512.4742609856. The cubic root of 42412321 is about 348.7364534419.

Adding to 42412321 its reverse (12321424), we get a palindrome (54733745).

The spelling of 42412321 in words is "forty-two million, four hundred twelve thousand, three hundred twenty-one".