100043738 has 4 divisors (see below), whose sum is σ = 150065610. Its totient is φ = 50021868.

The previous prime is 100043737. The next prime is 100043761. The reversal of 100043738 is 837340001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837340001 = 23 ⋅36406087.

It can be written as a sum of positive squares in only one way, i.e., 81234169 + 18809569 = 9013^2 + 4337^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100043737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25010933 + ... + 25010936.

Almost surely, 2^100043738 is an apocalyptic number.

100043738 is a deficient number, since it is larger than the sum of its proper divisors (50021872).

100043738 is an equidigital number, since it uses as much as digits as its factorization.

100043738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50021871.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 100043738 is about 10002.1866609257. The cubic root of 100043738 is about 464.2265447685.

Adding to 100043738 its reverse (837340001), we get a palindrome (937383739).

The spelling of 100043738 in words is "one hundred million, forty-three thousand, seven hundred thirty-eight".