134240161 has 4 divisors (see below), whose sum is σ = 146443824. Its totient is φ = 122036500.

The previous prime is 134240153. The next prime is 134240173. The reversal of 134240161 is 161042431.

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 134240161 - 2³ = 134240153 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134240461) 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, 6101815 + ... + 6101836.

It is an arithmetic number, because the mean of its divisors is an integer number (36610956).

Almost surely, 2^134240161 is an apocalyptic number.

134240161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134240161 is a deficient number, since it is larger than the sum of its proper divisors (12203663).

134240161 is a wasteful number, since it uses less digits than its factorization.

134240161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12203662.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 134240161 is about 11586.2056342877. The cubic root of 134240161 is about 512.0285234455.

Adding to 134240161 its reverse (161042431), we get a palindrome (295282592).

The spelling of 134240161 in words is "one hundred thirty-four million, two hundred forty thousand, one hundred sixty-one".