100434243 has 64 divisors (see below), whose sum is σ = 173100032. Its totient is φ = 50388480.

The previous prime is 100434241. The next prime is 100434259. The reversal of 100434243 is 342434001.

It is not a de Polignac number, because 100434243 - 2¹ = 100434241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (100434241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 616080 + ... + 616242.

It is an arithmetic number, because the mean of its divisors is an integer number (2704688).

Almost surely, 2^100434243 is an apocalyptic number.

100434243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

100434243 is a deficient number, since it is larger than the sum of its proper divisors (72665789).

100434243 is a wasteful number, since it uses less digits than its factorization.

100434243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 100434243 is about 10021.6886301661. The cubic root of 100434243 is about 464.8297723535.

Adding to 100434243 its reverse (342434001), we get a palindrome (442868244).

The spelling of 100434243 in words is "one hundred million, four hundred thirty-four thousand, two hundred forty-three".