135129377 has 2 divisors, whose sum is σ = 135129378. Its totient is φ = 135129376.

The previous prime is 135129373. The next prime is 135129391. The reversal of 135129377 is 773921531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88943761 + 46185616 = 9431^2 + 6796^2 .

It is an emirp because it is prime and its reverse (773921531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135129377 - 2² = 135129373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135129377.

It is not a weakly prime, because it can be changed into another prime (135129373) 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, 67564688 + 67564689.

It is an arithmetic number, because the mean of its divisors is an integer number (67564689).

Almost surely, 2^135129377 is an apocalyptic number.

It is an amenable number.

135129377 is a deficient number, since it is larger than the sum of its proper divisors (1).

135129377 is an equidigital number, since it uses as much as digits as its factorization.

135129377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39690, while the sum is 38.

The square root of 135129377 is about 11624.5162049868. The cubic root of 135129377 is about 513.1566069092.

The spelling of 135129377 in words is "one hundred thirty-five million, one hundred twenty-nine thousand, three hundred seventy-seven".