154000123 has 2 divisors, whose sum is σ = 154000124. Its totient is φ = 154000122.

The previous prime is 154000097. The next prime is 154000159. The reversal of 154000123 is 321000451.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154000123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154000097 and 154000106.

It is not a weakly prime, because it can be changed into another prime (154000163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77000061 + 77000062.

It is an arithmetic number, because the mean of its divisors is an integer number (77000062).

Almost surely, 2^154000123 is an apocalyptic number.

154000123 is a deficient number, since it is larger than the sum of its proper divisors (1).

154000123 is an equidigital number, since it uses as much as digits as its factorization.

154000123 is an evil number, because the sum of its binary digits is even.

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

The square root of 154000123 is about 12409.6786018011. The cubic root of 154000123 is about 536.0109838007.

Adding to 154000123 its reverse (321000451), we get a palindrome (475000574).

The spelling of 154000123 in words is "one hundred fifty-four million, one hundred twenty-three", and thus it is an aban number.