134408761 has 2 divisors, whose sum is σ = 134408762. Its totient is φ = 134408760.

The previous prime is 134408759. The next prime is 134408843. The reversal of 134408761 is 167804431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113294736 + 21114025 = 10644^2 + 4595^2 .

It is a cyclic number.

It is not a de Polignac number, because 134408761 - 2¹ = 134408759 is a prime.

Together with 134408759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (134408741) 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, 67204380 + 67204381.

It is an arithmetic number, because the mean of its divisors is an integer number (67204381).

Almost surely, 2^134408761 is an apocalyptic number.

It is an amenable number.

134408761 is a deficient number, since it is larger than the sum of its proper divisors (1).

134408761 is an equidigital number, since it uses as much as digits as its factorization.

134408761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 134408761 is about 11593.4792448169. The cubic root of 134408761 is about 512.2427958663.

It can be divided in two parts, 13440 and 8761, that added together give a square (22201 = 149²).

The spelling of 134408761 in words is "one hundred thirty-four million, four hundred eight thousand, seven hundred sixty-one".