42243329 has 4 divisors (see below), whose sum is σ = 43225776. Its totient is φ = 41260884.

The previous prime is 42243281. The next prime is 42243337. The reversal of 42243329 is 92334224.

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 42243329 - 2¹² = 42239233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42243349) 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, 491159 + ... + 491244.

It is an arithmetic number, because the mean of its divisors is an integer number (10806444).

Almost surely, 2^42243329 is an apocalyptic number.

It is an amenable number.

42243329 is a deficient number, since it is larger than the sum of its proper divisors (982447).

42243329 is an equidigital number, since it uses as much as digits as its factorization.

42243329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982446.

The product of its digits is 10368, while the sum is 29.

The square root of 42243329 is about 6499.4868258963. The cubic root of 42243329 is about 348.2726564692.

The spelling of 42243329 in words is "forty-two million, two hundred forty-three thousand, three hundred twenty-nine".