154423 has 2 divisors, whose sum is σ = 154424. Its totient is φ = 154422.

The previous prime is 154417. The next prime is 154439. The reversal of 154423 is 324451.

It is a weak prime.

It is an emirp because it is prime and its reverse (324451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154423 - 2⁹ = 153911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77211 + 77212.

It is an arithmetic number, because the mean of its divisors is an integer number (77212).

2¹⁵⁴⁴²³ is an apocalyptic number.

154423 is a deficient number, since it is larger than the sum of its proper divisors (1).

154423 is an equidigital number, since it uses as much as digits as its factorization.

154423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 19.

The square root of 154423 is about 392.9669197273. The cubic root of 154423 is about 53.6501155619.

Adding to 154423 its reverse (324451), we get a palindrome (478874).

The spelling of 154423 in words is "one hundred fifty-four thousand, four hundred twenty-three".