140236424 has 16 divisors (see below), whose sum is σ = 263385600. Its totient is φ = 70000272.

The previous prime is 140236423. The next prime is 140236469. The reversal of 140236424 is 424632041.

It is a junction number, because it is equal to n+sod(n) for n = 140236393 and 140236402.

It is not an unprimeable number, because it can be changed into a prime (140236423) by changing a digit.

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, 9584 + ... + 19295.

It is an arithmetic number, because the mean of its divisors is an integer number (16461600).

Almost surely, 2^140236424 is an apocalyptic number.

It is an amenable number.

140236424 is a deficient number, since it is larger than the sum of its proper divisors (123149176).

140236424 is a wasteful number, since it uses less digits than its factorization.

140236424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29492 (or 29488 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 140236424 is about 11842.1460892864. The cubic root of 140236424 is about 519.5415387143.

Adding to 140236424 its reverse (424632041), we get a palindrome (564868465).

The spelling of 140236424 in words is "one hundred forty million, two hundred thirty-six thousand, four hundred twenty-four".