100145047 has 2 divisors, whose sum is σ = 100145048. Its totient is φ = 100145046.

The previous prime is 100145039. The next prime is 100145077. The reversal of 100145047 is 740541001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100145047 - 2³ = 100145039 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100145027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50072523 + 50072524.

It is an arithmetic number, because the mean of its divisors is an integer number (50072524).

Almost surely, 2^100145047 is an apocalyptic number.

100145047 is a deficient number, since it is larger than the sum of its proper divisors (1).

100145047 is an equidigital number, since it uses as much as digits as its factorization.

100145047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 100145047 is about 10007.2497220765. The cubic root of 100145047 is about 464.3831911242.

Adding to 100145047 its reverse (740541001), we get a palindrome (840686048).

The spelling of 100145047 in words is "one hundred million, one hundred forty-five thousand, forty-seven".