128158144 has 14 divisors (see below), whose sum is σ = 254313944. Its totient is φ = 64079040.

The previous prime is 128158127. The next prime is 128158171. The reversal of 128158144 is 441851821.

It is a happy number.

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, 1001172 + ... + 1001299.

Almost surely, 2^128158144 is an apocalyptic number.

It is an amenable number.

128158144 is a deficient number, since it is larger than the sum of its proper divisors (126155800).

128158144 is an equidigital number, since it uses as much as digits as its factorization.

128158144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002483 (or 2002473 counting only the distinct ones).

The product of its digits is 10240, while the sum is 34.

The square root of 128158144 is about 11320.6953850018. The cubic root of 128158144 is about 504.1758855344.

The spelling of 128158144 in words is "one hundred twenty-eight million, one hundred fifty-eight thousand, one hundred forty-four".