133543139 has 2 divisors, whose sum is σ = 133543140. Its totient is φ = 133543138.

The previous prime is 133543117. The next prime is 133543159. The reversal of 133543139 is 931345331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133543139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133543159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66771569 + 66771570.

It is an arithmetic number, because the mean of its divisors is an integer number (66771570).

Almost surely, 2^133543139 is an apocalyptic number.

133543139 is a deficient number, since it is larger than the sum of its proper divisors (1).

133543139 is an equidigital number, since it uses as much as digits as its factorization.

133543139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 32.

The square root of 133543139 is about 11556.0866646110. The cubic root of 133543139 is about 511.1407746051.

The spelling of 133543139 in words is "one hundred thirty-three million, five hundred forty-three thousand, one hundred thirty-nine".