8438123 has 2 divisors, whose sum is σ = 8438124. Its totient is φ = 8438122.

The previous prime is 8438119. The next prime is 8438141. The reversal of 8438123 is 3218348.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8438123 - 2² = 8438119 is a prime.

It is not a weakly prime, because it can be changed into another prime (8438173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4219061 + 4219062.

It is an arithmetic number, because the mean of its divisors is an integer number (4219062).

Almost surely, 2^8438123 is an apocalyptic number.

8438123 is a deficient number, since it is larger than the sum of its proper divisors (1).

8438123 is an equidigital number, since it uses as much as digits as its factorization.

8438123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 29.

The square root of 8438123 is about 2904.8447462816. The cubic root of 8438123 is about 203.5863317352.

The spelling of 8438123 in words is "eight million, four hundred thirty-eight thousand, one hundred twenty-three".