30142 has 8 divisors (see below), whose sum is σ = 51696. Its totient is φ = 12912.

The previous prime is 30139. The next prime is 30161. The reversal of 30142 is 24103.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1063 + ... + 1090.

It is an arithmetic number, because the mean of its divisors is an integer number (6462).

2³⁰¹⁴² is an apocalyptic number.

30142 is a deficient number, since it is larger than the sum of its proper divisors (21554).

30142 is a wasteful number, since it uses less digits than its factorization.

30142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 30142 is about 173.6145155222. The cubic root of 30142 is about 31.1212731354.

Adding to 30142 its reverse (24103), we get a palindrome (54245).

It can be divided in two parts, 301 and 42, that added together give a palindrome (343).

The spelling of 30142 in words is "thirty thousand, one hundred forty-two".