134970881 has 4 divisors (see below), whose sum is σ = 134994132. Its totient is φ = 134947632.

The previous prime is 134970853. The next prime is 134970911. The reversal of 134970881 is 188079431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 188079431 = 1021 ⋅184211.

It can be written as a sum of positive squares in 2 ways, for example, as 2835856 + 132135025 = 1684^2 + 11495^2 .

It is a cyclic number.

It is not a de Polignac number, because 134970881 - 2⁶ = 134970817 is a prime.

It is a super-2 number, since 2×134970881² = 36434277435832322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134975881) 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 in 3 ways as a sum of consecutive naturals, for example, 5195 + ... + 17231.

It is an arithmetic number, because the mean of its divisors is an integer number (33748533).

Almost surely, 2^134970881 is an apocalyptic number.

It is an amenable number.

134970881 is a deficient number, since it is larger than the sum of its proper divisors (23251).

134970881 is a wasteful number, since it uses less digits than its factorization.

134970881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23250.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 134970881 is about 11617.6968887986. The cubic root of 134970881 is about 512.9558978030.

The spelling of 134970881 in words is "one hundred thirty-four million, nine hundred seventy thousand, eight hundred eighty-one".