134478881 has 2 divisors, whose sum is σ = 134478882. Its totient is φ = 134478880.

The previous prime is 134478871. The next prime is 134478901. The reversal of 134478881 is 188874431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120670225 + 13808656 = 10985^2 + 3716^2 .

It is a cyclic number.

It is not a de Polignac number, because 134478881 - 2¹⁸ = 134216737 is a prime.

It is a super-2 number, since 2×134478881² = 36169138870024322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (134478871) 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, 67239440 + 67239441.

It is an arithmetic number, because the mean of its divisors is an integer number (67239441).

Almost surely, 2^134478881 is an apocalyptic number.

It is an amenable number.

134478881 is a deficient number, since it is larger than the sum of its proper divisors (1).

134478881 is an equidigital number, since it uses as much as digits as its factorization.

134478881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 44.

The square root of 134478881 is about 11596.5029642561. The cubic root of 134478881 is about 512.3318580680.

The spelling of 134478881 in words is "one hundred thirty-four million, four hundred seventy-eight thousand, eight hundred eighty-one".