438042023 has 2 divisors, whose sum is σ = 438042024. Its totient is φ = 438042022.

The previous prime is 438041993. The next prime is 438042049. The reversal of 438042023 is 320240834.

It is an a-pointer prime, because the next prime (438042049) can be obtained adding 438042023 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 438042023 - 2¹⁸ = 437779879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438041983 and 438042001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438042083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219021011 + 219021012.

It is an arithmetic number, because the mean of its divisors is an integer number (219021012).

Almost surely, 2^438042023 is an apocalyptic number.

438042023 is a deficient number, since it is larger than the sum of its proper divisors (1).

438042023 is an equidigital number, since it uses as much as digits as its factorization.

438042023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 438042023 is about 20929.4534806812. The cubic root of 438042023 is about 759.4606185545.

Adding to 438042023 its reverse (320240834), we get a palindrome (758282857).

The spelling of 438042023 in words is "four hundred thirty-eight million, forty-two thousand, twenty-three".