154123 has 4 divisors (see below), whose sum is σ = 160848. Its totient is φ = 147400.

The previous prime is 154111. The next prime is 154127. The reversal of 154123 is 321451.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 154123 - 2⁹ = 153611 is a prime.

It is a Duffinian number.

154123 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 154097 and 154106.

It is not an unprimeable number, because it can be changed into a prime (154127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3328 + ... + 3373.

It is an arithmetic number, because the mean of its divisors is an integer number (40212).

2¹⁵⁴¹²³ is an apocalyptic number.

154123 is a deficient number, since it is larger than the sum of its proper divisors (6725).

154123 is an equidigital number, since it uses as much as digits as its factorization.

154123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724.

The product of its digits is 120, while the sum is 16.

The square root of 154123 is about 392.5850226384. The cubic root of 154123 is about 53.6153507306.

Adding to 154123 its reverse (321451), we get a palindrome (475574).

The spelling of 154123 in words is "one hundred fifty-four thousand, one hundred twenty-three".