100421330 has 16 divisors (see below), whose sum is σ = 185644440. Its totient is φ = 39082752.

The previous prime is 100421323. The next prime is 100421333. The reversal of 100421330 is 33124001.

It can be written as a sum of positive squares in 4 ways, for example, as 99580441 + 840889 = 9979^2 + 917^2 .

It is not an unprimeable number, because it can be changed into a prime (100421333) 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, 135335 + ... + 136074.

Almost surely, 2^100421330 is an apocalyptic number.

100421330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100421330 is a deficient number, since it is larger than the sum of its proper divisors (85223110).

100421330 is a wasteful number, since it uses less digits than its factorization.

100421330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271453.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 100421330 is about 10021.0443567524. The cubic root of 100421330 is about 464.8098501837.

Adding to 100421330 its reverse (33124001), we get a palindrome (133545331).

The spelling of 100421330 in words is "one hundred million, four hundred twenty-one thousand, three hundred thirty".