100340121 has 32 divisors (see below), whose sum is σ = 161904640. Its totient is φ = 53996544.

The previous prime is 100340063. The next prime is 100340143. The reversal of 100340121 is 121043001.

It is a happy number.

It is not a de Polignac number, because 100340121 - 2¹⁰ = 100339097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100340097 and 100340106.

It is not an unprimeable number, because it can be changed into a prime (100340321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76356 + ... + 77658.

It is an arithmetic number, because the mean of its divisors is an integer number (5059520).

Almost surely, 2^100340121 is an apocalyptic number.

It is an amenable number.

100340121 is a deficient number, since it is larger than the sum of its proper divisors (61564519).

100340121 is a wasteful number, since it uses less digits than its factorization.

100340121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 100340121 is about 10016.9916142523. The cubic root of 100340121 is about 464.6845218206.

Adding to 100340121 its reverse (121043001), we get a palindrome (221383122).

The spelling of 100340121 in words is "one hundred million, three hundred forty thousand, one hundred twenty-one".