149170123 has 2 divisors, whose sum is σ = 149170124. Its totient is φ = 149170122.

The previous prime is 149170117. The next prime is 149170129. The reversal of 149170123 is 321071941.

149170123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (149170117) and next prime (149170129).

It is an emirp because it is prime and its reverse (321071941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149170123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149170091 and 149170100.

It is not a weakly prime, because it can be changed into another prime (149170129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74585061 + 74585062.

It is an arithmetic number, because the mean of its divisors is an integer number (74585062).

Almost surely, 2^149170123 is an apocalyptic number.

149170123 is a deficient number, since it is larger than the sum of its proper divisors (1).

149170123 is an equidigital number, since it uses as much as digits as its factorization.

149170123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 149170123 is about 12213.5221373689. The cubic root of 149170123 is about 530.3476098661.

The spelling of 149170123 in words is "one hundred forty-nine million, one hundred seventy thousand, one hundred twenty-three".