134005019 has 4 divisors (see below), whose sum is σ = 134410200. Its totient is φ = 133599840.

The previous prime is 134005013. The next prime is 134005021. The reversal of 134005019 is 910500431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910500431 = 4019 ⋅226549.

It is a cyclic number.

It is not a de Polignac number, because 134005019 - 2⁸ = 134004763 is a prime.

It is a super-2 number, since 2×134005019² = 35914690234380722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134004985 and 134005003.

It is not an unprimeable number, because it can be changed into a prime (134005013) 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, 202094 + ... + 202755.

It is an arithmetic number, because the mean of its divisors is an integer number (33602550).

Almost surely, 2^134005019 is an apocalyptic number.

134005019 is a deficient number, since it is larger than the sum of its proper divisors (405181).

134005019 is an equidigital number, since it uses as much as digits as its factorization.

134005019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405180.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 134005019 is about 11576.0536885417. The cubic root of 134005019 is about 511.7293835112.

The spelling of 134005019 in words is "one hundred thirty-four million, five thousand, nineteen".