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133421009 is a prime number
BaseRepresentation
bin1111111001111…
…01011111010001
3100022001111012212
413330331133101
5233123433014
621123401505
73210026351
oct774753721
9308044185
10133421009
11693491a7
1238823295
1321845957
1413a10b61
15baa723e
hex7f3d7d1

133421009 has 2 divisors, whose sum is σ = 133421010. Its totient is φ = 133421008.

The previous prime is 133421003. The next prime is 133421017. The reversal of 133421009 is 900124331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 60403984 = 8545^2 + 7772^2 .

It is a cyclic number.

It is not a de Polignac number, because 133421009 - 28 = 133420753 is a prime.

It is not a weakly prime, because it can be changed into another prime (133421003) 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, 66710504 + 66710505.

It is an arithmetic number, because the mean of its divisors is an integer number (66710505).

Almost surely, 2133421009 is an apocalyptic number.

It is an amenable number.

133421009 is a deficient number, since it is larger than the sum of its proper divisors (1).

133421009 is an equidigital number, since it uses as much as digits as its factorization.

133421009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 133421009 is about 11550.8012276205. The cubic root of 133421009 is about 510.9849082109.

The spelling of 133421009 in words is "one hundred thirty-three million, four hundred twenty-one thousand, nine".