100434865 has 8 divisors (see below), whose sum is σ = 120644928. Its totient is φ = 80265840.

The previous prime is 100434863. The next prime is 100434869. The reversal of 100434865 is 568434001.

It is a happy number.

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

It is not a de Polignac number, because 100434865 - 2¹ = 100434863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100434863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4587 + ... + 14896.

It is an arithmetic number, because the mean of its divisors is an integer number (15080616).

Almost surely, 2^100434865 is an apocalyptic number.

It is an amenable number.

100434865 is a deficient number, since it is larger than the sum of its proper divisors (20210063).

100434865 is a wasteful number, since it uses less digits than its factorization.

100434865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20519.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 100434865 is about 10021.7196628124. The cubic root of 100434865 is about 464.8307319316.

Adding to 100434865 its reverse (568434001), we get a palindrome (668868866).

The spelling of 100434865 in words is "one hundred million, four hundred thirty-four thousand, eight hundred sixty-five".