134142381809 has 2 divisors, whose sum is σ = 134142381810. Its totient is φ = 134142381808.

The previous prime is 134142381721. The next prime is 134142381889. The reversal of 134142381809 is 908183241431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118804302400 + 15338079409 = 344680^2 + 123847^2 .

It is a cyclic number.

It is not a de Polignac number, because 134142381809 - 2⁸ = 134142381553 is a prime.

It is a super-2 number, since 2×134142381809² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 134142381809.

It is not a weakly prime, because it can be changed into another prime (134142381889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67071190904 + 67071190905.

It is an arithmetic number, because the mean of its divisors is an integer number (67071190905).

Almost surely, 2^134142381809 is an apocalyptic number.

It is an amenable number.

134142381809 is a deficient number, since it is larger than the sum of its proper divisors (1).

134142381809 is an equidigital number, since it uses as much as digits as its factorization.

134142381809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 134142381809 in words is "one hundred thirty-four billion, one hundred forty-two million, three hundred eighty-one thousand, eight hundred nine".