133456747 has 2 divisors, whose sum is σ = 133456748. Its totient is φ = 133456746.

The previous prime is 133456721. The next prime is 133456781. The reversal of 133456747 is 747654331.

It is a weak prime.

It is an emirp because it is prime and its reverse (747654331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133456747 is a prime.

It is not a weakly prime, because it can be changed into another prime (133456717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66728373 + 66728374.

It is an arithmetic number, because the mean of its divisors is an integer number (66728374).

Almost surely, 2^133456747 is an apocalyptic number.

133456747 is a deficient number, since it is larger than the sum of its proper divisors (1).

133456747 is an equidigital number, since it uses as much as digits as its factorization.

133456747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 40.

The square root of 133456747 is about 11552.3481162922. The cubic root of 133456747 is about 511.0305280838.

It can be divided in two parts, 1334 and 56747, that added together give a square (58081 = 241²).

The spelling of 133456747 in words is "one hundred thirty-three million, four hundred fifty-six thousand, seven hundred forty-seven".