136668143 has 2 divisors, whose sum is σ = 136668144. Its totient is φ = 136668142.

The previous prime is 136668107. The next prime is 136668149. The reversal of 136668143 is 341866631.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136668143 - 2²² = 132473839 is a prime.

It is a super-2 number, since 2×136668143² = 37356362622136898, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136668097 and 136668106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136668149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68334071 + 68334072.

It is an arithmetic number, because the mean of its divisors is an integer number (68334072).

Almost surely, 2^136668143 is an apocalyptic number.

136668143 is a deficient number, since it is larger than the sum of its proper divisors (1).

136668143 is an equidigital number, since it uses as much as digits as its factorization.

136668143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The square root of 136668143 is about 11690.5150870267. The cubic root of 136668143 is about 515.0970916953.

The spelling of 136668143 in words is "one hundred thirty-six million, six hundred sixty-eight thousand, one hundred forty-three".