100142111 has 4 divisors (see below), whose sum is σ = 100174032. Its totient is φ = 100110192.

The previous prime is 100142089. The next prime is 100142113. The reversal of 100142111 is 111241001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100142111 - 2⁶ = 100142047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100142092 and 100142101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100142113) 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, 10670 + ... + 17723.

It is an arithmetic number, because the mean of its divisors is an integer number (25043508).

Almost surely, 2^100142111 is an apocalyptic number.

100142111 is a deficient number, since it is larger than the sum of its proper divisors (31921).

100142111 is an equidigital number, since it uses as much as digits as its factorization.

100142111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31920.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 100142111 is about 10007.1030273501. The cubic root of 100142111 is about 464.3786528988.

Adding to 100142111 its reverse (111241001), we get a palindrome (211383112).

The spelling of 100142111 in words is "one hundred million, one hundred forty-two thousand, one hundred eleven".