133725139 has 2 divisors, whose sum is σ = 133725140. Its totient is φ = 133725138.

The previous prime is 133725131. The next prime is 133725143. The reversal of 133725139 is 931527331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133725139 - 2³ = 133725131 is a prime.

It is not a weakly prime, because it can be changed into another prime (133725131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66862569 + 66862570.

It is an arithmetic number, because the mean of its divisors is an integer number (66862570).

Almost surely, 2^133725139 is an apocalyptic number.

133725139 is a deficient number, since it is larger than the sum of its proper divisors (1).

133725139 is an equidigital number, since it uses as much as digits as its factorization.

133725139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 34.

The square root of 133725139 is about 11563.9586215102. The cubic root of 133725139 is about 511.3728728683.

The spelling of 133725139 in words is "one hundred thirty-three million, seven hundred twenty-five thousand, one hundred thirty-nine".