140140424 has 16 divisors (see below), whose sum is σ = 267071820. Its totient is φ = 68921280.

The previous prime is 140140411. The next prime is 140140463. The reversal of 140140424 is 424041041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 106708900 + 33431524 = 10330^2 + 5782^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140140396 and 140140405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143099 + ... + 144074.

Almost surely, 2^140140424 is an apocalyptic number.

It is an amenable number.

140140424 is a deficient number, since it is larger than the sum of its proper divisors (126931396).

140140424 is a wasteful number, since it uses less digits than its factorization.

140140424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287240 (or 287236 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 140140424 is about 11838.0920760062. The cubic root of 140140424 is about 519.4229595044.

Adding to 140140424 its reverse (424041041), we get a palindrome (564181465).

The spelling of 140140424 in words is "one hundred forty million, one hundred forty thousand, four hundred twenty-four".