140039424 has 216 divisors, whose sum is σ = 486799040. Its totient is φ = 37822464.

The previous prime is 140039411. The next prime is 140039467. The reversal of 140039424 is 424930041.

140039424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140039424² = 39222080548503552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 306204 + ... + 306660.

Almost surely, 2^140039424 is an apocalyptic number.

140039424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140039424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243399520).

140039424 is an abundant number, since it is smaller than the sum of its proper divisors (346759616).

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

140039424 is a wasteful number, since it uses less digits than its factorization.

140039424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 140039424 is about 11833.8254169985. The cubic root of 140039424 is about 519.2981458220.

Adding to 140039424 its reverse (424930041), we get a palindrome (564969465).

The spelling of 140039424 in words is "one hundred forty million, thirty-nine thousand, four hundred twenty-four".