42310321 has 4 divisors (see below), whose sum is σ = 44537200. Its totient is φ = 40083444.

The previous prime is 42310313. The next prime is 42310327. The reversal of 42310321 is 12301324.

It is a happy number.

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 42310321 - 2³ = 42310313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42310295 and 42310304.

It is not an unprimeable number, because it can be changed into a prime (42310327) 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, 1113411 + ... + 1113448.

It is an arithmetic number, because the mean of its divisors is an integer number (11134300).

Almost surely, 2^42310321 is an apocalyptic number.

It is an amenable number.

42310321 is a deficient number, since it is larger than the sum of its proper divisors (2226879).

42310321 is a wasteful number, since it uses less digits than its factorization.

42310321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226878.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 42310321 is about 6504.6384219263. The cubic root of 42310321 is about 348.4566631098.

Adding to 42310321 its reverse (12301324), we get a palindrome (54611645).

The spelling of 42310321 in words is "forty-two million, three hundred ten thousand, three hundred twenty-one".