134495021 has 4 divisors (see below), whose sum is σ = 134522112. Its totient is φ = 134467932.

The previous prime is 134495017. The next prime is 134495027. The reversal of 134495021 is 120594431.

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: 120594431 = 227 ⋅531253.

It is a cyclic number.

It is not a de Polignac number, because 134495021 - 2² = 134495017 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 (134495027) 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, 3725 + ... + 16818.

It is an arithmetic number, because the mean of its divisors is an integer number (33630528).

Almost surely, 2^134495021 is an apocalyptic number.

It is an amenable number.

134495021 is a deficient number, since it is larger than the sum of its proper divisors (27091).

134495021 is an equidigital number, since it uses as much as digits as its factorization.

134495021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27090.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 134495021 is about 11597.1988428241. The cubic root of 134495021 is about 512.3523537407.

The spelling of 134495021 in words is "one hundred thirty-four million, four hundred ninety-five thousand, twenty-one".