140103440 has 20 divisors (see below), whose sum is σ = 325740684. Its totient is φ = 56041344.

The previous prime is 140103361. The next prime is 140103451. The reversal of 140103440 is 44301041.

It can be written as a sum of positive squares in 2 ways, for example, as 49168144 + 90935296 = 7012^2 + 9536^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 875567 + ... + 875726.

Almost surely, 2^140103440 is an apocalyptic number.

140103440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140103440 is an abundant number, since it is smaller than the sum of its proper divisors (185637244).

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

140103440 is a wasteful number, since it uses less digits than its factorization.

140103440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751306 (or 1751300 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 140103440 is about 11836.5298968912. The cubic root of 140103440 is about 519.3772624140.

Adding to 140103440 its reverse (44301041), we get a palindrome (184404481).

The spelling of 140103440 in words is "one hundred forty million, one hundred three thousand, four hundred forty".