133442047 has 2 divisors, whose sum is σ = 133442048. Its totient is φ = 133442046.

The previous prime is 133442041. The next prime is 133442053. The reversal of 133442047 is 740244331.

It is a balanced prime because it is at equal distance from previous prime (133442041) and next prime (133442053).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133442047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133442041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66721023 + 66721024.

It is an arithmetic number, because the mean of its divisors is an integer number (66721024).

Almost surely, 2^133442047 is an apocalyptic number.

133442047 is a deficient number, since it is larger than the sum of its proper divisors (1).

133442047 is an equidigital number, since it uses as much as digits as its factorization.

133442047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 133442047 is about 11551.7118644814. The cubic root of 133442047 is about 511.0117643900.

Adding to 133442047 its reverse (740244331), we get a palindrome (873686378).

The spelling of 133442047 in words is "one hundred thirty-three million, four hundred forty-two thousand, forty-seven".