42723223 has 2 divisors, whose sum is σ = 42723224. Its totient is φ = 42723222.

The previous prime is 42723221. The next prime is 42723251. The reversal of 42723223 is 32232724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42723223 - 2¹ = 42723221 is a prime.

Together with 42723221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42723221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21361611 + 21361612.

It is an arithmetic number, because the mean of its divisors is an integer number (21361612).

Almost surely, 2^42723223 is an apocalyptic number.

42723223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42723223 is an equidigital number, since it uses as much as digits as its factorization.

42723223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 25.

The square root of 42723223 is about 6536.3004061931. The cubic root of 42723223 is about 349.5865130631.

Adding to 42723223 its reverse (32232724), we get a palindrome (74955947).

The spelling of 42723223 in words is "forty-two million, seven hundred twenty-three thousand, two hundred twenty-three".