142236031 has 8 divisors (see below), whose sum is σ = 163231904. Its totient is φ = 121409280.

The previous prime is 142236023. The next prime is 142236043. The reversal of 142236031 is 130632241.

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 142236031 - 2³ = 142236023 is a prime.

It is a super-3 number, since 3×142236031³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142235993 and 142236011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142246031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40470 + ... + 43843.

It is an arithmetic number, because the mean of its divisors is an integer number (20403988).

Almost surely, 2^142236031 is an apocalyptic number.

142236031 is a deficient number, since it is larger than the sum of its proper divisors (20995873).

142236031 is an equidigital number, since it uses as much as digits as its factorization.

142236031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84561.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 142236031 is about 11926.2748165553. The cubic root of 142236031 is about 521.9992452145. Note that the first 3 decimals are identical.

Adding to 142236031 its reverse (130632241), we get a palindrome (272868272).

The spelling of 142236031 in words is "one hundred forty-two million, two hundred thirty-six thousand, thirty-one".