975105128 has 8 divisors (see below), whose sum is σ = 1828322130. Its totient is φ = 487552560.

The previous prime is 975105113. The next prime is 975105139. The reversal of 975105128 is 821501579.

It can be written as a sum of positive squares in only one way, i.e., 919423684 + 55681444 = 30322^2 + 7462^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 975105091 and 975105100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60944063 + ... + 60944078.

Almost surely, 2^975105128 is an apocalyptic number.

It is an amenable number.

975105128 is a deficient number, since it is larger than the sum of its proper divisors (853217002).

975105128 is a wasteful number, since it uses less digits than its factorization.

975105128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121888147 (or 121888143 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 38.

The square root of 975105128 is about 31226.6733418723. The cubic root of 975105128 is about 991.6318792150.

The spelling of 975105128 in words is "nine hundred seventy-five million, one hundred five thousand, one hundred twenty-eight".