100428842 has 4 divisors (see below), whose sum is σ = 150643266. Its totient is φ = 50214420.

The previous prime is 100428791. The next prime is 100428847. The reversal of 100428842 is 248824001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50993881 + 49434961 = 7141^2 + 7031^2 .

It is not an unprimeable number, because it can be changed into a prime (100428847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25107209 + ... + 25107212.

Almost surely, 2^100428842 is an apocalyptic number.

100428842 is a deficient number, since it is larger than the sum of its proper divisors (50214424).

100428842 is an equidigital number, since it uses as much as digits as its factorization.

100428842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50214423.

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 100428842 is about 10021.4191609772. The cubic root of 100428842 is about 464.8214399012.

The spelling of 100428842 in words is "one hundred million, four hundred twenty-eight thousand, eight hundred forty-two".