135142023 has 16 divisors (see below), whose sum is σ = 183666816. Its totient is φ = 88364640.

The previous prime is 135141983. The next prime is 135142057. The reversal of 135142023 is 320241531.

It is not a de Polignac number, because 135142023 - 2¹⁷ = 135010951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135140023) 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 15 ways as a sum of consecutive naturals, for example, 80236 + ... + 81902.

It is an arithmetic number, because the mean of its divisors is an integer number (11479176).

Almost surely, 2^135142023 is an apocalyptic number.

135142023 is a deficient number, since it is larger than the sum of its proper divisors (48524793).

135142023 is a wasteful number, since it uses less digits than its factorization.

135142023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 135142023 is about 11625.0601288768. The cubic root of 135142023 is about 513.1726142255.

Adding to 135142023 its reverse (320241531), we get a palindrome (455383554).

The spelling of 135142023 in words is "one hundred thirty-five million, one hundred forty-two thousand, twenty-three".