133375427 has 2 divisors, whose sum is σ = 133375428. Its totient is φ = 133375426.

The previous prime is 133375397. The next prime is 133375447. The reversal of 133375427 is 724573331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133375427 - 2⁸ = 133375171 is a prime.

It is not a weakly prime, because it can be changed into another prime (133375447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66687713 + 66687714.

It is an arithmetic number, because the mean of its divisors is an integer number (66687714).

Almost surely, 2^133375427 is an apocalyptic number.

133375427 is a deficient number, since it is larger than the sum of its proper divisors (1).

133375427 is an equidigital number, since it uses as much as digits as its factorization.

133375427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 35.

The square root of 133375427 is about 11548.8279491903. The cubic root of 133375427 is about 510.9267105622.

The spelling of 133375427 in words is "one hundred thirty-three million, three hundred seventy-five thousand, four hundred twenty-seven".