135019 has 2 divisors, whose sum is σ = 135020. Its totient is φ = 135018.

The previous prime is 135017. The next prime is 135029. The reversal of 135019 is 910531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135019 - 2¹ = 135017 is a prime.

It is a super-2 number, since 2×135019² = 36460260722, which contains 22 as substring.

Together with 135017, it forms a pair of twin primes.

It is a Chen prime.

135019 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 134987 and 135005.

It is not a weakly prime, because it can be changed into another prime (135017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67509 + 67510.

It is an arithmetic number, because the mean of its divisors is an integer number (67510).

2¹³⁵⁰¹⁹ is an apocalyptic number.

135019 is a deficient number, since it is larger than the sum of its proper divisors (1).

135019 is an equidigital number, since it uses as much as digits as its factorization.

135019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 135019 is about 367.4493162329. The cubic root of 135019 is about 51.3016849202.

It can be divided in two parts, 1350 and 19, that added together give a square (1369 = 37²).

The spelling of 135019 in words is "one hundred thirty-five thousand, nineteen".