133154123 has 2 divisors, whose sum is σ = 133154124. Its totient is φ = 133154122.

The previous prime is 133154089. The next prime is 133154137. The reversal of 133154123 is 321451331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133154123 - 2⁶ = 133154059 is a prime.

It is not a weakly prime, because it can be changed into another prime (133154173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66577061 + 66577062.

It is an arithmetic number, because the mean of its divisors is an integer number (66577062).

Almost surely, 2^133154123 is an apocalyptic number.

133154123 is a deficient number, since it is larger than the sum of its proper divisors (1).

133154123 is an equidigital number, since it uses as much as digits as its factorization.

133154123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 133154123 is about 11539.2427394522. The cubic root of 133154123 is about 510.6439680250.

The spelling of 133154123 in words is "one hundred thirty-three million, one hundred fifty-four thousand, one hundred twenty-three".