100421296 has 20 divisors (see below), whose sum is σ = 194725384. Its totient is φ = 50169600.

The previous prime is 100421267. The next prime is 100421303. The reversal of 100421296 is 692124001.

It is a self number, because there is not a number n which added to its sum of digits gives 100421296.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30616 + ... + 33736.

Almost surely, 2^100421296 is an apocalyptic number.

100421296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

100421296 is a deficient number, since it is larger than the sum of its proper divisors (94304088).

100421296 is a wasteful number, since it uses less digits than its factorization.

100421296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5140 (or 5134 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 100421296 is about 10021.0426603223. The cubic root of 100421296 is about 464.8097977263.

Adding to 100421296 its reverse (692124001), we get a palindrome (792545297).

The spelling of 100421296 in words is "one hundred million, four hundred twenty-one thousand, two hundred ninety-six".