134833721 has 4 divisors (see below), whose sum is σ = 147091344. Its totient is φ = 122576100.

The previous prime is 134833717. The next prime is 134833723. The reversal of 134833721 is 127338431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 127338431 = 11 ⋅11576221.

It is a cyclic number.

It is not a de Polignac number, because 134833721 - 2² = 134833717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134833723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6128795 + ... + 6128816.

It is an arithmetic number, because the mean of its divisors is an integer number (36772836).

Almost surely, 2^134833721 is an apocalyptic number.

134833721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134833721 is a deficient number, since it is larger than the sum of its proper divisors (12257623).

134833721 is a wasteful number, since it uses less digits than its factorization.

134833721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12257622.

The product of its digits is 12096, while the sum is 32.

The square root of 134833721 is about 11611.7923250461. The cubic root of 134833721 is about 512.7820803677.

The spelling of 134833721 in words is "one hundred thirty-four million, eight hundred thirty-three thousand, seven hundred twenty-one".