42243243 has 48 divisors (see below), whose sum is σ = 69100416. Its totient is φ = 22861440.

The previous prime is 42243241. The next prime is 42243247. The reversal of 42243243 is 34234224.

It is not a de Polignac number, because 42243243 - 2¹ = 42243241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42243241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 259080 + ... + 259242.

It is an arithmetic number, because the mean of its divisors is an integer number (1439592).

Almost surely, 2^42243243 is an apocalyptic number.

42243243 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42243243 is a deficient number, since it is larger than the sum of its proper divisors (26857173).

42243243 is a wasteful number, since it uses less digits than its factorization.

42243243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 257 counting only the distinct ones).

The product of its digits is 4608, while the sum is 24.

The square root of 42243243 is about 6499.4802099860. The cubic root of 42243243 is about 348.2724201284.

Adding to 42243243 its reverse (34234224), we get a palindrome (76477467).

It can be divided in two parts, 42243 and 243, that added together give a triangular number (42486 = T₂₉₁).

The spelling of 42243243 in words is "forty-two million, two hundred forty-three thousand, two hundred forty-three".