100042147 has 2 divisors, whose sum is σ = 100042148. Its totient is φ = 100042146.

The previous prime is 100042121. The next prime is 100042153. The reversal of 100042147 is 741240001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100042147 - 2¹¹ = 100040099 is a prime.

It is not a weakly prime, because it can be changed into another prime (100042447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50021073 + 50021074.

It is an arithmetic number, because the mean of its divisors is an integer number (50021074).

Almost surely, 2^100042147 is an apocalyptic number.

100042147 is a deficient number, since it is larger than the sum of its proper divisors (1).

100042147 is an equidigital number, since it uses as much as digits as its factorization.

100042147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 100042147 is about 10002.1071280006. The cubic root of 100042147 is about 464.2240838836.

Adding to 100042147 its reverse (741240001), we get a palindrome (841282148).

The spelling of 100042147 in words is "one hundred million, forty-two thousand, one hundred forty-seven".