100111142 has 4 divisors (see below), whose sum is σ = 150166716. Its totient is φ = 50055570.

The previous prime is 100111127. The next prime is 100111169. The reversal of 100111142 is 241111001.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25027784 + ... + 25027787.

It is an arithmetic number, because the mean of its divisors is an integer number (37541679).

Almost surely, 2^100111142 is an apocalyptic number.

100111142 is a deficient number, since it is larger than the sum of its proper divisors (50055574).

100111142 is an equidigital number, since it uses as much as digits as its factorization.

100111142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50055573.

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

The square root of 100111142 is about 10005.5555567894. Note that the first 5 decimals coincide. The cubic root of 100111142 is about 464.3307781833.

Adding to 100111142 its reverse (241111001), we get a palindrome (341222143).

The spelling of 100111142 in words is "one hundred million, one hundred eleven thousand, one hundred forty-two".