100500040 has 16 divisors (see below), whose sum is σ = 226125180. Its totient is φ = 40200000.

The previous prime is 100500019. The next prime is 100500121. The reversal of 100500040 is 40005001.

It can be written as a sum of positive squares in 2 ways, for example, as 84162276 + 16337764 = 9174^2 + 4042^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256211 + ... + 1256290.

Almost surely, 2^100500040 is an apocalyptic number.

100500040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100500040 is an abundant number, since it is smaller than the sum of its proper divisors (125625140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100500040 is a wasteful number, since it uses less digits than its factorization.

100500040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512512 (or 2512508 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 100500040 is about 10024.9708229002. The cubic root of 100500040 is about 464.9312574220.

Adding to 100500040 its reverse (40005001), we get a palindrome (140505041).

The spelling of 100500040 in words is "one hundred million, five hundred thousand, forty".