100040015 has 8 divisors (see below), whose sum is σ = 120131808. Its totient is φ = 79976160.

The previous prime is 100040011. The next prime is 100040023. The reversal of 100040015 is 510040001.

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

It is not a de Polignac number, because 100040015 - 2² = 100040011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100039978 and 100040005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100040011) 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, 1934 + ... + 14276.

It is an arithmetic number, because the mean of its divisors is an integer number (15016476).

Almost surely, 2^100040015 is an apocalyptic number.

100040015 is a deficient number, since it is larger than the sum of its proper divisors (20091793).

100040015 is a wasteful number, since it uses less digits than its factorization.

100040015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13969.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 100040015 is about 10002.0005498900. Note that the first 3 decimals coincide. The cubic root of 100040015 is about 464.2207861643.

Subtracting from 100040015 its sum of digits (11), we obtain a square (100040004 = 10002²).

Adding to 100040015 its reverse (510040001), we get a palindrome (610080016).

The spelling of 100040015 in words is "one hundred million, forty thousand, fifteen".