133420843 has 2 divisors, whose sum is σ = 133420844. Its totient is φ = 133420842.

The previous prime is 133420841. The next prime is 133420871. The reversal of 133420843 is 348024331.

It is an a-pointer prime, because the next prime (133420871) can be obtained adding 133420843 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133420843 - 2¹ = 133420841 is a prime.

It is a super-2 number, since 2×133420843² = 35602242693661298, which contains 22 as substring.

Together with 133420841, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133420841) 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, 66710421 + 66710422.

It is an arithmetic number, because the mean of its divisors is an integer number (66710422).

Almost surely, 2^133420843 is an apocalyptic number.

133420843 is a deficient number, since it is larger than the sum of its proper divisors (1).

133420843 is an equidigital number, since it uses as much as digits as its factorization.

133420843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 133420843 is about 11550.7940419696. The cubic root of 133420843 is about 510.9846962915.

The spelling of 133420843 in words is "one hundred thirty-three million, four hundred twenty thousand, eight hundred forty-three".