133012489 has 2 divisors, whose sum is σ = 133012490. Its totient is φ = 133012488.

The previous prime is 133012469. The next prime is 133012541. The reversal of 133012489 is 984210331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70476025 + 62536464 = 8395^2 + 7908^2 .

It is a cyclic number.

It is not a de Polignac number, because 133012489 - 2¹⁷ = 132881417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133012489.

It is not a weakly prime, because it can be changed into another prime (133012469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66506244 + 66506245.

It is an arithmetic number, because the mean of its divisors is an integer number (66506245).

Almost surely, 2^133012489 is an apocalyptic number.

It is an amenable number.

133012489 is a deficient number, since it is larger than the sum of its proper divisors (1).

133012489 is an equidigital number, since it uses as much as digits as its factorization.

133012489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 133012489 is about 11533.1040487806. The cubic root of 133012489 is about 510.4628490710.

The spelling of 133012489 in words is "one hundred thirty-three million, twelve thousand, four hundred eighty-nine".