134121511 has 4 divisors (see below), whose sum is σ = 134164800. Its totient is φ = 134078224.

The previous prime is 134121509. The next prime is 134121521. The reversal of 134121511 is 115121431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 134121511 - 2¹ = 134121509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134121521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16606 + ... + 23323.

It is an arithmetic number, because the mean of its divisors is an integer number (33541200).

Almost surely, 2^134121511 is an apocalyptic number.

134121511 is a deficient number, since it is larger than the sum of its proper divisors (43289).

134121511 is an equidigital number, since it uses as much as digits as its factorization.

134121511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43288.

The product of its digits is 120, while the sum is 19.

The square root of 134121511 is about 11581.0841893149. The cubic root of 134121511 is about 511.8776245105.

Adding to 134121511 its reverse (115121431), we get a palindrome (249242942).

The spelling of 134121511 in words is "one hundred thirty-four million, one hundred twenty-one thousand, five hundred eleven".