142135181 has 8 divisors (see below), whose sum is σ = 158417280. Its totient is φ = 126733248.

The previous prime is 142135163. The next prime is 142135183. The reversal of 142135181 is 181531241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142135181 - 2²² = 137940877 is a prime.

It is a super-2 number, since 2×142135181² = 40404819355805522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142135181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142135183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219701 + ... + 220346.

It is an arithmetic number, because the mean of its divisors is an integer number (19802160).

Almost surely, 2^142135181 is an apocalyptic number.

It is an amenable number.

142135181 is a deficient number, since it is larger than the sum of its proper divisors (16282099).

142135181 is a wasteful number, since it uses less digits than its factorization.

142135181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440083.

The product of its digits is 960, while the sum is 26.

The square root of 142135181 is about 11922.0460072925. The cubic root of 142135181 is about 521.8758445299.

The spelling of 142135181 in words is "one hundred forty-two million, one hundred thirty-five thousand, one hundred eighty-one".