133421069 has 2 divisors, whose sum is σ = 133421070. Its totient is φ = 133421068.

The previous prime is 133421063. The next prime is 133421081. The reversal of 133421069 is 960124331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85285225 + 48135844 = 9235^2 + 6938^2 .

It is a cyclic number.

It is not a de Polignac number, because 133421069 - 2⁸ = 133420813 is a prime.

It is a super-2 number, since 2×133421069² = 35602363306205522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_7561082 and since 133421069 and 7561082 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133421063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66710534 + 66710535.

It is an arithmetic number, because the mean of its divisors is an integer number (66710535).

Almost surely, 2^133421069 is an apocalyptic number.

It is an amenable number.

133421069 is a deficient number, since it is larger than the sum of its proper divisors (1).

133421069 is an equidigital number, since it uses as much as digits as its factorization.

133421069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 133421069 is about 11550.8038248427. The cubic root of 133421069 is about 510.9849848083.

The spelling of 133421069 in words is "one hundred thirty-three million, four hundred twenty-one thousand, sixty-nine".