42343321 has 4 divisors (see below), whose sum is σ = 42577444. Its totient is φ = 42109200.

The previous prime is 42343319. The next prime is 42343337. The reversal of 42343321 is 12334324.

It is a happy number.

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 13838400 + 28504921 = 3720^2 + 5339^2 .

It is a cyclic number.

It is not a de Polignac number, because 42343321 - 2¹ = 42343319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42343292 and 42343301.

It is not an unprimeable number, because it can be changed into a prime (42343421) 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, 116790 + ... + 117151.

It is an arithmetic number, because the mean of its divisors is an integer number (10644361).

Almost surely, 2^42343321 is an apocalyptic number.

It is an amenable number.

42343321 is a deficient number, since it is larger than the sum of its proper divisors (234123).

42343321 is a wasteful number, since it uses less digits than its factorization.

42343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234122.

The product of its digits is 1728, while the sum is 22.

The square root of 42343321 is about 6507.1745788783. The cubic root of 42343321 is about 348.5472326709.

Adding to 42343321 its reverse (12334324), we get a palindrome (54677645).

The spelling of 42343321 in words is "forty-two million, three hundred forty-three thousand, three hundred twenty-one".