134211861 has 12 divisors (see below), whose sum is σ = 221556192. Its totient is φ = 76692456.

The previous prime is 134211851. The next prime is 134211863. The reversal of 134211861 is 168112431.

It is a happy number.

It is not a de Polignac number, because 134211861 - 2⁵ = 134211829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134211863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1065111 + ... + 1065236.

It is an arithmetic number, because the mean of its divisors is an integer number (18463016).

Almost surely, 2^134211861 is an apocalyptic number.

It is an amenable number.

134211861 is a deficient number, since it is larger than the sum of its proper divisors (87344331).

134211861 is a wasteful number, since it uses less digits than its factorization.

134211861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130360 (or 2130357 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 134211861 is about 11584.9842900196. The cubic root of 134211861 is about 511.9925396150.

It can be divided in two parts, 1342 and 11861, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 134211861 in words is "one hundred thirty-four million, two hundred eleven thousand, eight hundred sixty-one".