134500021 has 8 divisors (see below), whose sum is σ = 142444224. Its totient is φ = 126730560.

The previous prime is 134500019. The next prime is 134500033. The reversal of 134500021 is 120005431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134500021 - 2¹ = 134500019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134499968 and 134500004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134500081) 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 7 ways as a sum of consecutive naturals, for example, 42100 + ... + 45181.

It is an arithmetic number, because the mean of its divisors is an integer number (17805528).

Almost surely, 2^134500021 is an apocalyptic number.

It is an amenable number.

134500021 is a deficient number, since it is larger than the sum of its proper divisors (7944203).

134500021 is an equidigital number, since it uses as much as digits as its factorization.

134500021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87371.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 134500021 is about 11597.4144101175. The cubic root of 134500021 is about 512.3587027490.

Adding to 134500021 its reverse (120005431), we get a palindrome (254505452).

The spelling of 134500021 in words is "one hundred thirty-four million, five hundred thousand, twenty-one".