100421315 has 8 divisors (see below), whose sum is σ = 120566880. Its totient is φ = 80296192.

The previous prime is 100421303. The next prime is 100421317. The reversal of 100421315 is 513124001.

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

It is a cyclic number.

It is not a de Polignac number, because 100421315 - 2¹⁰ = 100420291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100421293 and 100421302.

It is not an unprimeable number, because it can be changed into a prime (100421317) 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, 9506 + ... + 17064.

It is an arithmetic number, because the mean of its divisors is an integer number (15070860).

Almost surely, 2^100421315 is an apocalyptic number.

100421315 is a deficient number, since it is larger than the sum of its proper divisors (20145565).

100421315 is an equidigital number, since it uses as much as digits as its factorization.

100421315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 100421315 is about 10021.0436083274. The cubic root of 100421315 is about 464.8098270407.

Adding to 100421315 its reverse (513124001), we get a palindrome (613545316).

The spelling of 100421315 in words is "one hundred million, four hundred twenty-one thousand, three hundred fifteen".