100420444 has 6 divisors (see below), whose sum is σ = 175735784. Its totient is φ = 50210220.

The previous prime is 100420427. The next prime is 100420447. The reversal of 100420444 is 444024001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100420447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12552552 + ... + 12552559.

Almost surely, 2^100420444 is an apocalyptic number.

It is an amenable number.

100420444 is a deficient number, since it is larger than the sum of its proper divisors (75315340).

100420444 is a wasteful number, since it uses less digits than its factorization.

100420444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25105115 (or 25105113 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 100420444 is about 10021.0001496857. Note that the first 3 decimals coincide. The cubic root of 100420444 is about 464.8084832008.

Adding to 100420444 its reverse (444024001), we get a palindrome (544444445).

The spelling of 100420444 in words is "one hundred million, four hundred twenty thousand, four hundred forty-four".