100561143 has 8 divisors (see below), whose sum is σ = 134982000. Its totient is φ = 66590528.

The previous prime is 100561099. The next prime is 100561147. The reversal of 100561143 is 341165001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100561143 - 2⁹ = 100560631 is a prime.

It is a super-2 number, since 2×100561143² = 20225086962932898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100561147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112038 + ... + 112931.

It is an arithmetic number, because the mean of its divisors is an integer number (16872750).

Almost surely, 2^100561143 is an apocalyptic number.

100561143 is a deficient number, since it is larger than the sum of its proper divisors (34420857).

100561143 is a wasteful number, since it uses less digits than its factorization.

100561143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225121.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 100561143 is about 10028.0178998644. The cubic root of 100561143 is about 465.0254628212.

The spelling of 100561143 in words is "one hundred million, five hundred sixty-one thousand, one hundred forty-three".