42023305 has 8 divisors (see below), whose sum is σ = 51791112. Its totient is φ = 32709888.

The previous prime is 42023273. The next prime is 42023309. The reversal of 42023305 is 50332024.

It can be written as a sum of positive squares in 4 ways, for example, as 6215049 + 35808256 = 2493^2 + 5984^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42023305 - 2⁵ = 42023273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42023309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113392 + ... + 113761.

It is an arithmetic number, because the mean of its divisors is an integer number (6473889).

Almost surely, 2^42023305 is an apocalyptic number.

It is an amenable number.

42023305 is a deficient number, since it is larger than the sum of its proper divisors (9767807).

42023305 is a wasteful number, since it uses less digits than its factorization.

42023305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227195.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 42023305 is about 6482.5384688407. The cubic root of 42023305 is about 347.6669452999. Note that the first 3 decimals are identical.

Adding to 42023305 its reverse (50332024), we get a palindrome (92355329).

It can be divided in two parts, 420 and 23305, that multiplied together give a triangular number (9788100 = T₄₄₂₄).

The spelling of 42023305 in words is "forty-two million, twenty-three thousand, three hundred five".