100142 has 16 divisors (see below), whose sum is σ = 179712. Its totient is φ = 40920.

The previous prime is 100129. The next prime is 100151. The reversal of 100142 is 241001.

It is a congruent number.

It is an unprimeable number.

100142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167 + ... + 477.

It is an arithmetic number, because the mean of its divisors is an integer number (11232).

2¹⁰⁰¹⁴² is an apocalyptic number.

100142 is a deficient number, since it is larger than the sum of its proper divisors (79570).

100142 is a wasteful number, since it uses less digits than its factorization.

100142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 100142 is about 316.4522080820. The cubic root of 100142 is about 46.4378481322.

Adding to 100142 its reverse (241001), we get a palindrome (341143).

It can be divided in two parts, 100 and 142, that added together give a palindrome (242).

The spelling of 100142 in words is "one hundred thousand, one hundred forty-two", and thus it is an iban number.