42643323 has 12 divisors (see below), whose sum is σ = 62758800. Its totient is φ = 27892176.

The previous prime is 42643313. The next prime is 42643333. The reversal of 42643323 is 32334624.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42643313) and next prime (42643333).

It is not a de Polignac number, because 42643323 - 2⁵ = 42643291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42643303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44223 + ... + 45176.

It is an arithmetic number, because the mean of its divisors is an integer number (5229900).

Almost surely, 2^42643323 is an apocalyptic number.

42643323 is a deficient number, since it is larger than the sum of its proper divisors (20115477).

42643323 is a wasteful number, since it uses less digits than its factorization.

42643323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89458 (or 89455 counting only the distinct ones).

The product of its digits is 10368, while the sum is 27.

The square root of 42643323 is about 6530.1855256953. The cubic root of 42643323 is about 349.3684474841.

Adding to 42643323 its reverse (32334624), we get a palindrome (74977947).

The spelling of 42643323 in words is "forty-two million, six hundred forty-three thousand, three hundred twenty-three".