100015421 has 8 divisors (see below), whose sum is σ = 109968384. Its totient is φ = 90205920.

The previous prime is 100015387. The next prime is 100015427. The reversal of 100015421 is 124510001.

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 100015421 - 2²⁶ = 32906557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100015396 and 100015405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100015427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34400 + ... + 37193.

It is an arithmetic number, because the mean of its divisors is an integer number (13746048).

Almost surely, 2^100015421 is an apocalyptic number.

100015421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100015421 is a deficient number, since it is larger than the sum of its proper divisors (9952963).

100015421 is a wasteful number, since it uses less digits than its factorization.

100015421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71731.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 100015421 is about 10000.7710202764. The cubic root of 100015421 is about 464.1827414487.

Adding to 100015421 its reverse (124510001), we get a palindrome (224525422).

The spelling of 100015421 in words is "one hundred million, fifteen thousand, four hundred twenty-one".