100512147 has 12 divisors (see below), whose sum is σ = 141442440. Its totient is φ = 63480672.

The previous prime is 100512133. The next prime is 100512163. The reversal of 100512147 is 741215001.

It is a happy number.

It is not a de Polignac number, because 100512147 - 2⁷ = 100512019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100512547) 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 11 ways as a sum of consecutive naturals, for example, 45322 + ... + 47487.

It is an arithmetic number, because the mean of its divisors is an integer number (11786870).

Almost surely, 2^100512147 is an apocalyptic number.

100512147 is a deficient number, since it is larger than the sum of its proper divisors (40930293).

100512147 is an equidigital number, since it uses as much as digits as its factorization.

100512147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92850 (or 92831 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 100512147 is about 10025.5746468719. The cubic root of 100512147 is about 464.9499263920.

Adding to 100512147 its reverse (741215001), we get a palindrome (841727148).

The spelling of 100512147 in words is "one hundred million, five hundred twelve thousand, one hundred forty-seven".