100040215 has 16 divisors (see below), whose sum is σ = 131448096. Its totient is φ = 72486400.

The previous prime is 100040201. The next prime is 100040233. The reversal of 100040215 is 512040001.

It is a de Polignac number, because none of the positive numbers 2^k-100040215 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100040195 and 100040204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12219 + ... + 18691.

It is an arithmetic number, because the mean of its divisors is an integer number (8215506).

Almost surely, 2^100040215 is an apocalyptic number.

100040215 is a deficient number, since it is larger than the sum of its proper divisors (31407881).

100040215 is a wasteful number, since it uses less digits than its factorization.

100040215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 100040215 is about 10002.0105478849. The cubic root of 100040215 is about 464.2210955208.

Adding to 100040215 its reverse (512040001), we get a palindrome (612080216).

The spelling of 100040215 in words is "one hundred million, forty thousand, two hundred fifteen".