140128036 has 12 divisors (see below), whose sum is σ = 246496012. Its totient is φ = 69700608.

The previous prime is 140128007. The next prime is 140128061. The reversal of 140128036 is 630821041.

It can be written as a sum of positive squares in 2 ways, for example, as 17892900 + 122235136 = 4230^2 + 11056^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140128036.

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, 89985 + ... + 91528.

Almost surely, 2^140128036 is an apocalyptic number.

It is an amenable number.

140128036 is a deficient number, since it is larger than the sum of its proper divisors (106367976).

140128036 is a wasteful number, since it uses less digits than its factorization.

140128036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181710 (or 181708 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 140128036 is about 11837.5688382370. The cubic root of 140128036 is about 519.4076539011.

Adding to 140128036 its reverse (630821041), we get a palindrome (770949077).

The spelling of 140128036 in words is "one hundred forty million, one hundred twenty-eight thousand, thirty-six".