100866043 has 2 divisors, whose sum is σ = 100866044. Its totient is φ = 100866042.

The previous prime is 100866019. The next prime is 100866047. The reversal of 100866043 is 340668001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100866043 - 2¹⁷ = 100734971 is a prime.

It is not a weakly prime, because it can be changed into another prime (100866047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50433021 + 50433022.

It is an arithmetic number, because the mean of its divisors is an integer number (50433022).

Almost surely, 2^100866043 is an apocalyptic number.

100866043 is a deficient number, since it is larger than the sum of its proper divisors (1).

100866043 is an equidigital number, since it uses as much as digits as its factorization.

100866043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 100866043 is about 10043.2087999802. The cubic root of 100866043 is about 465.4949722237.

It can be divided in two parts, 10086 and 6043, that added together give a square (16129 = 127²).

The spelling of 100866043 in words is "one hundred million, eight hundred sixty-six thousand, forty-three".