135143019 has 32 divisors (see below), whose sum is σ = 220711680. Its totient is φ = 81043200.

The previous prime is 135142961. The next prime is 135143051. The reversal of 135143019 is 910341531.

135143019 is a `hidden beast` number, since 1 + 351 + 4 + 301 + 9 = 666.

It is not a de Polignac number, because 135143019 - 2²⁷ = 925291 is a prime.

It is a super-2 number, since 2×135143019² = 36527271168868722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 135142983 and 135143001.

It is not an unprimeable number, because it can be changed into a prime (135143059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26464 + ... + 31154.

It is an arithmetic number, because the mean of its divisors is an integer number (6897240).

Almost surely, 2^135143019 is an apocalyptic number.

135143019 is a deficient number, since it is larger than the sum of its proper divisors (85568661).

135143019 is a wasteful number, since it uses less digits than its factorization.

135143019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4808 (or 4802 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 135143019 is about 11625.1029672859. The cubic root of 135143019 is about 513.1738749206.

The spelling of 135143019 in words is "one hundred thirty-five million, one hundred forty-three thousand, nineteen".