100840751 has 4 divisors (see below), whose sum is σ = 110008104. Its totient is φ = 91673400.

The previous prime is 100840739. The next prime is 100840757. The reversal of 100840751 is 157048001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100840751 - 2¹⁸ = 100578607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100840751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100840757) by changing a digit.

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, 4583660 + ... + 4583681.

It is an arithmetic number, because the mean of its divisors is an integer number (27502026).

Almost surely, 2^100840751 is an apocalyptic number.

100840751 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100840751 is a deficient number, since it is larger than the sum of its proper divisors (9167353).

100840751 is an equidigital number, since it uses as much as digits as its factorization.

100840751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9167352.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 100840751 is about 10041.9495617136. The cubic root of 100840751 is about 465.4560615964.

Adding to 100840751 its reverse (157048001), we get a palindrome (257888752).

The spelling of 100840751 in words is "one hundred million, eight hundred forty thousand, seven hundred fifty-one".