100145071 has 4 divisors (see below), whose sum is σ = 107848552. Its totient is φ = 92441592.

The previous prime is 100145047. The next prime is 100145077. The reversal of 100145071 is 170541001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170541001 = 631 ⋅270271.

It is a cyclic number.

It is not a de Polignac number, because 100145071 - 2⁵ = 100145039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100145077) 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 3 ways as a sum of consecutive naturals, for example, 3851721 + ... + 3851746.

It is an arithmetic number, because the mean of its divisors is an integer number (26962138).

Almost surely, 2^100145071 is an apocalyptic number.

100145071 is a deficient number, since it is larger than the sum of its proper divisors (7703481).

100145071 is an equidigital number, since it uses as much as digits as its factorization.

100145071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7703480.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 100145071 is about 10007.2509212071. The cubic root of 100145071 is about 464.3832282210.

Adding to 100145071 its reverse (170541001), we get a palindrome (270686072).

The spelling of 100145071 in words is "one hundred million, one hundred forty-five thousand, seventy-one".