100420089 has 16 divisors (see below), whose sum is σ = 166932480. Its totient is φ = 52166160.

The previous prime is 100420081. The next prime is 100420097. The reversal of 100420089 is 980024001.

It is an interprime number because it is at equal distance from previous prime (100420081) and next prime (100420097).

It is not a de Polignac number, because 100420089 - 2³ = 100420081 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100420081) 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 15 ways as a sum of consecutive naturals, for example, 217129 + ... + 217590.

It is an arithmetic number, because the mean of its divisors is an integer number (10433280).

Almost surely, 2^100420089 is an apocalyptic number.

It is an amenable number.

100420089 is a deficient number, since it is larger than the sum of its proper divisors (66512391).

100420089 is a wasteful number, since it uses less digits than its factorization.

100420089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434740.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 100420089 is about 10020.9824368672. The cubic root of 100420089 is about 464.8079354796.

The spelling of 100420089 in words is "one hundred million, four hundred twenty thousand, eighty-nine".