100421355 has 32 divisors (see below), whose sum is σ = 163953216. Its totient is φ = 52475904.

The previous prime is 100421333. The next prime is 100421357. The reversal of 100421355 is 553124001.

It is not a de Polignac number, because 100421355 - 2⁵ = 100421323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100421357) 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, 320679 + ... + 320991.

It is an arithmetic number, because the mean of its divisors is an integer number (5123538).

Almost surely, 2^100421355 is an apocalyptic number.

100421355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100421355 is a deficient number, since it is larger than the sum of its proper divisors (63531861).

100421355 is a wasteful number, since it uses less digits than its factorization.

100421355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 100421355 is about 10021.0456041273. The cubic root of 100421355 is about 464.8098887554.

Adding to 100421355 its reverse (553124001), we get a palindrome (653545356).

The spelling of 100421355 in words is "one hundred million, four hundred twenty-one thousand, three hundred fifty-five".