100125428 has 12 divisors (see below), whose sum is σ = 188698020. Its totient is φ = 46211712.

The previous prime is 100125409. The next prime is 100125433. The reversal of 100125428 is 824521001.

It can be written as a sum of positive squares in 2 ways, for example, as 26646244 + 73479184 = 5162^2 + 8572^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962693 + ... + 962796.

It is an arithmetic number, because the mean of its divisors is an integer number (15724835).

Almost surely, 2^100125428 is an apocalyptic number.

It is an amenable number.

100125428 is a deficient number, since it is larger than the sum of its proper divisors (88572592).

100125428 is a wasteful number, since it uses less digits than its factorization.

100125428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925506 (or 1925504 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 100125428 is about 10006.2694347094. The cubic root of 100125428 is about 464.3528640166.

Adding to 100125428 its reverse (824521001), we get a palindrome (924646429).

The spelling of 100125428 in words is "one hundred million, one hundred twenty-five thousand, four hundred twenty-eight".