100140645 has 16 divisors (see below), whose sum is σ = 174791232. Its totient is φ = 48552960.

The previous prime is 100140629. The next prime is 100140647. The reversal of 100140645 is 546041001.

It is not a de Polignac number, because 100140645 - 2⁴ = 100140629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100140647) 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 15 ways as a sum of consecutive naturals, for example, 303292 + ... + 303621.

It is an arithmetic number, because the mean of its divisors is an integer number (10924452).

Almost surely, 2^100140645 is an apocalyptic number.

100140645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100140645 is a deficient number, since it is larger than the sum of its proper divisors (74650587).

100140645 is a wasteful number, since it uses less digits than its factorization.

100140645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606932.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 100140645 is about 10007.0297791103. The cubic root of 100140645 is about 464.3763868444.

Adding to 100140645 its reverse (546041001), we get a palindrome (646181646).

The spelling of 100140645 in words is "one hundred million, one hundred forty thousand, six hundred forty-five".