123438673 has 2 divisors, whose sum is σ = 123438674. Its totient is φ = 123438672.

The previous prime is 123438661. The next prime is 123438709. The reversal of 123438673 is 376834321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94633984 + 28804689 = 9728^2 + 5367^2 .

It is a cyclic number.

It is not a de Polignac number, because 123438673 - 2¹⁷ = 123307601 is a prime.

It is not a weakly prime, because it can be changed into another prime (123438473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61719336 + 61719337.

It is an arithmetic number, because the mean of its divisors is an integer number (61719337).

Almost surely, 2^123438673 is an apocalyptic number.

It is an amenable number.

123438673 is a deficient number, since it is larger than the sum of its proper divisors (1).

123438673 is an equidigital number, since it uses as much as digits as its factorization.

123438673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 37.

The square root of 123438673 is about 11110.2958106434. The cubic root of 123438673 is about 497.9095024881.

The spelling of 123438673 in words is "one hundred twenty-three million, four hundred thirty-eight thousand, six hundred seventy-three".