135142951 has 4 divisors (see below), whose sum is σ = 137692872. Its totient is φ = 132593032.

The previous prime is 135142939. The next prime is 135142961. The reversal of 135142951 is 159241531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 159241531 = 59 ⋅2699009.

It is a cyclic number.

It is not a de Polignac number, because 135142951 - 2⁹ = 135142439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135142961) 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, 1274881 + ... + 1274986.

It is an arithmetic number, because the mean of its divisors is an integer number (34423218).

Almost surely, 2^135142951 is an apocalyptic number.

135142951 is a deficient number, since it is larger than the sum of its proper divisors (2549921).

135142951 is an equidigital number, since it uses as much as digits as its factorization.

135142951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549920.

The product of its digits is 5400, while the sum is 31.

The square root of 135142951 is about 11625.1000425803. The cubic root of 135142951 is about 513.1737888493.

The spelling of 135142951 in words is "one hundred thirty-five million, one hundred forty-two thousand, nine hundred fifty-one".