100421044 has 6 divisors (see below), whose sum is σ = 175736834. Its totient is φ = 50210520.

The previous prime is 100421033. The next prime is 100421053. The reversal of 100421044 is 440124001.

It can be written as a sum of positive squares in only one way, i.e., 99800100 + 620944 = 9990^2 + 788^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12552627 + ... + 12552634.

Almost surely, 2^100421044 is an apocalyptic number.

It is an amenable number.

100421044 is a deficient number, since it is larger than the sum of its proper divisors (75315790).

100421044 is a wasteful number, since it uses less digits than its factorization.

100421044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25105265 (or 25105263 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 100421044 is about 10021.0300867725. The cubic root of 100421044 is about 464.8094089237.

Adding to 100421044 its reverse (440124001), we get a palindrome (540545045).

The spelling of 100421044 in words is "one hundred million, four hundred twenty-one thousand, forty-four".