134721111 has 8 divisors (see below), whose sum is σ = 205289344. Its totient is φ = 76983480.

The previous prime is 134721109. The next prime is 134721127. The reversal of 134721111 is 111127431.

134721111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 134721111 - 2¹ = 134721109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6415291 = 134721111 / (1 + 3 + 4 + 7 + 2 + 1 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134721101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3207625 + ... + 3207666.

It is an arithmetic number, because the mean of its divisors is an integer number (25661168).

Almost surely, 2^134721111 is an apocalyptic number.

134721111 is a deficient number, since it is larger than the sum of its proper divisors (70568233).

134721111 is an equidigital number, since it uses as much as digits as its factorization.

134721111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6415301.

The product of its digits is 168, while the sum is 21.

The square root of 134721111 is about 11606.9423622244. The cubic root of 134721111 is about 512.6392860362.

Adding to 134721111 its reverse (111127431), we get a palindrome (245848542).

The spelling of 134721111 in words is "one hundred thirty-four million, seven hundred twenty-one thousand, one hundred eleven".