100040065 has 8 divisors (see below), whose sum is σ = 121739328. Its totient is φ = 78904560.

The previous prime is 100040063. The next prime is 100040071. The reversal of 100040065 is 560040001.

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

It is not a de Polignac number, because 100040065 - 2¹ = 100040063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100040063) 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, 140547 + ... + 141256.

It is an arithmetic number, because the mean of its divisors is an integer number (15217416).

Almost surely, 2^100040065 is an apocalyptic number.

It is an amenable number.

100040065 is a deficient number, since it is larger than the sum of its proper divisors (21699263).

100040065 is an equidigital number, since it uses as much as digits as its factorization.

100040065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281879.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 100040065 is about 10002.0030493897. The cubic root of 100040065 is about 464.2208635034.

Adding to 100040065 its reverse (560040001), we get a palindrome (660080066).

The spelling of 100040065 in words is "one hundred million, forty thousand, sixty-five".