100442643 has 16 divisors (see below), whose sum is σ = 153605376. Its totient is φ = 57189600.

The previous prime is 100442611. The next prime is 100442653. The reversal of 100442643 is 346244001.

It is not a de Polignac number, because 100442643 - 2⁵ = 100442611 is a prime.

It is a super-4 number, since 4×100442643⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (100442653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2508 + ... + 14393.

It is an arithmetic number, because the mean of its divisors is an integer number (9600336).

Almost surely, 2^100442643 is an apocalyptic number.

100442643 is a deficient number, since it is larger than the sum of its proper divisors (53162733).

100442643 is a wasteful number, since it uses less digits than its factorization.

100442643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17194.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 100442643 is about 10022.1077124525. The cubic root of 100442643 is about 464.8427309525.

Adding to 100442643 its reverse (346244001), we get a palindrome (446686644).

The spelling of 100442643 in words is "one hundred million, four hundred forty-two thousand, six hundred forty-three".