42403223 has 2 divisors, whose sum is σ = 42403224. Its totient is φ = 42403222.

The previous prime is 42403217. The next prime is 42403247. The reversal of 42403223 is 32230424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42403223 - 2⁶ = 42403159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42403195 and 42403204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42403213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201611 + 21201612.

It is an arithmetic number, because the mean of its divisors is an integer number (21201612).

Almost surely, 2^42403223 is an apocalyptic number.

42403223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42403223 is an equidigital number, since it uses as much as digits as its factorization.

42403223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 42403223 is about 6511.7757178822. The cubic root of 42403223 is about 348.7115154752.

Adding to 42403223 its reverse (32230424), we get a palindrome (74633647).

It can be divided in two parts, 424032 and 23, that multiplied together give a triangular number (9752736 = T₄₄₁₆).

The spelling of 42403223 in words is "forty-two million, four hundred three thousand, two hundred twenty-three".