1238423 has 2 divisors, whose sum is σ = 1238424. Its totient is φ = 1238422.

The previous prime is 1238411. The next prime is 1238429. The reversal of 1238423 is 3248321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1238423 - 2⁴ = 1238407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1238429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619211 + 619212.

It is an arithmetic number, because the mean of its divisors is an integer number (619212).

2^1238423 is an apocalyptic number.

1238423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238423 is an equidigital number, since it uses as much as digits as its factorization.

1238423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 1238423 is about 1112.8445533856. The cubic root of 1238423 is about 107.3881439727.

It can be divided in two parts, 1238 and 423, that added together give a palindrome (1661).

The spelling of 1238423 in words is "one million, two hundred thirty-eight thousand, four hundred twenty-three".