100240506 has 12 divisors (see below), whose sum is σ = 217187802. Its totient is φ = 33413496.

The previous prime is 100240499. The next prime is 100240529. The reversal of 100240506 is 605042001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 85100625 + 15139881 = 9225^2 + 3891^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5568917 = 100240506 / (1 + 0 + 0 + 2 + 4 + 0 + 5 + 0 + 6).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2784441 + ... + 2784476.

Almost surely, 2^100240506 is an apocalyptic number.

100240506 is an abundant number, since it is smaller than the sum of its proper divisors (116947296).

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

100240506 is a wasteful number, since it uses less digits than its factorization.

100240506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5568925 (or 5568922 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 100240506 is about 10012.0180782897. The cubic root of 100240506 is about 464.5306954316.

Adding to 100240506 its reverse (605042001), we get a palindrome (705282507).

The spelling of 100240506 in words is "one hundred million, two hundred forty thousand, five hundred six".