100340421 has 8 divisors (see below), whose sum is σ = 139604160. Its totient is φ = 63985152.

The previous prime is 100340413. The next prime is 100340423. The reversal of 100340421 is 124043001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100340421 - 2³ = 100340413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100340421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100340423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727036 + ... + 727173.

It is an arithmetic number, because the mean of its divisors is an integer number (17450520).

Almost surely, 2^100340421 is an apocalyptic number.

It is an amenable number.

100340421 is a deficient number, since it is larger than the sum of its proper divisors (39263739).

100340421 is a wasteful number, since it uses less digits than its factorization.

100340421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454235.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 100340421 is about 10017.0065887969. The cubic root of 100340421 is about 464.6849849295.

Adding to 100340421 its reverse (124043001), we get a palindrome (224383422).

The spelling of 100340421 in words is "one hundred million, three hundred forty thousand, four hundred twenty-one".