40200128 has 14 divisors (see below), whose sum is σ = 79772256. Its totient is φ = 20100032.

The previous prime is 40200109. The next prime is 40200133. The reversal of 40200128 is 82100204.

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, 314000 + ... + 314127.

Almost surely, 2^40200128 is an apocalyptic number.

It is an amenable number.

40200128 is a deficient number, since it is larger than the sum of its proper divisors (39572128).

40200128 is an equidigital number, since it uses as much as digits as its factorization.

40200128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628139 (or 628129 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 40200128 is about 6340.3570877357. The cubic root of 40200128 is about 342.5645975446.

The spelling of 40200128 in words is "forty million, two hundred thousand, one hundred twenty-eight".