133130429 has 2 divisors, whose sum is σ = 133130430. Its totient is φ = 133130428.

The previous prime is 133130419. The next prime is 133130441. The reversal of 133130429 is 924031331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88548100 + 44582329 = 9410^2 + 6677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133130429 is a prime.

It is a super-2 number, since 2×133130429² = 35447422251448082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133130398 and 133130407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133130419) 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, 66565214 + 66565215.

It is an arithmetic number, because the mean of its divisors is an integer number (66565215).

Almost surely, 2^133130429 is an apocalyptic number.

It is an amenable number.

133130429 is a deficient number, since it is larger than the sum of its proper divisors (1).

133130429 is an equidigital number, since it uses as much as digits as its factorization.

133130429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 133130429 is about 11538.2160232854. The cubic root of 133130429 is about 510.6136775224.

Subtracting from 133130429 its sum of digits (26), we obtain a triangular number (133130403 = T₁₆₃₁₇).

The spelling of 133130429 in words is "one hundred thirty-three million, one hundred thirty thousand, four hundred twenty-nine".