134040221 has 4 divisors (see below), whose sum is σ = 153188832. Its totient is φ = 114891612.

The previous prime is 134040217. The next prime is 134040229. The reversal of 134040221 is 122040431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 134040221 - 2² = 134040217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 134040221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134040229) 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, 9574295 + ... + 9574308.

It is an arithmetic number, because the mean of its divisors is an integer number (38297208).

Almost surely, 2^134040221 is an apocalyptic number.

It is an amenable number.

134040221 is a deficient number, since it is larger than the sum of its proper divisors (19148611).

134040221 is an equidigital number, since it uses as much as digits as its factorization.

134040221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19148610.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 134040221 is about 11577.5740550428. The cubic root of 134040221 is about 511.7741886007.

Adding to 134040221 its reverse (122040431), we get a palindrome (256080652).

The spelling of 134040221 in words is "one hundred thirty-four million, forty thousand, two hundred twenty-one".