134642243 has 2 divisors, whose sum is σ = 134642244. Its totient is φ = 134642242.

The previous prime is 134642231. The next prime is 134642279. The reversal of 134642243 is 342246431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 134642243 - 2¹⁶ = 134576707 is a prime.

It is not a weakly prime, because it can be changed into another prime (134642213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67321121 + 67321122.

It is an arithmetic number, because the mean of its divisors is an integer number (67321122).

Almost surely, 2^134642243 is an apocalyptic number.

134642243 is a deficient number, since it is larger than the sum of its proper divisors (1).

134642243 is an equidigital number, since it uses as much as digits as its factorization.

134642243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 29.

The square root of 134642243 is about 11603.5444153931. The cubic root of 134642243 is about 512.5392306277.

Adding to 134642243 its reverse (342246431), we get a palindrome (476888674).

The spelling of 134642243 in words is "one hundred thirty-four million, six hundred forty-two thousand, two hundred forty-three".