140304040 has 16 divisors (see below), whose sum is σ = 315684180. Its totient is φ = 56121600.

The previous prime is 140304019. The next prime is 140304089. The reversal of 140304040 is 40403041.

140304040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 139098436 + 1205604 = 11794^2 + 1098^2 .

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, 1753761 + ... + 1753840.

Almost surely, 2^140304040 is an apocalyptic number.

140304040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140304040 is an abundant number, since it is smaller than the sum of its proper divisors (175380140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140304040 is a wasteful number, since it uses less digits than its factorization.

140304040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507612 (or 3507608 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 140304040 is about 11845.0006331785. Note that the first 3 decimals coincide. The cubic root of 140304040 is about 519.6250255271.

Adding to 140304040 its reverse (40403041), we get a palindrome (180707081).

Subtracting from 140304040 its reverse (40403041), we obtain a palindrome (99900999).

The spelling of 140304040 in words is "one hundred forty million, three hundred four thousand, forty".