133242797 has 2 divisors, whose sum is σ = 133242798. Its totient is φ = 133242796.

The previous prime is 133242779. The next prime is 133242829. The reversal of 133242797 is 797242331.

Together with previous prime (133242779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131652676 + 1590121 = 11474^2 + 1261^2 .

It is a cyclic number.

It is not a de Polignac number, because 133242797 - 2²⁴ = 116465581 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133242797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133242737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66621398 + 66621399.

It is an arithmetic number, because the mean of its divisors is an integer number (66621399).

Almost surely, 2^133242797 is an apocalyptic number.

It is an amenable number.

133242797 is a deficient number, since it is larger than the sum of its proper divisors (1).

133242797 is an equidigital number, since it uses as much as digits as its factorization.

133242797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 38.

The square root of 133242797 is about 11543.0843798354. The cubic root of 133242797 is about 510.7572973367.

The spelling of 133242797 in words is "one hundred thirty-three million, two hundred forty-two thousand, seven hundred ninety-seven".