140432440 has 16 divisors (see below), whose sum is σ = 315973080. Its totient is φ = 56172960.

The previous prime is 140432437. The next prime is 140432441. The reversal of 140432440 is 44234041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140432441) 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, 1755366 + ... + 1755445.

Almost surely, 2^140432440 is an apocalyptic number.

140432440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140432440 is an abundant number, since it is smaller than the sum of its proper divisors (175540640).

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

140432440 is a wasteful number, since it uses less digits than its factorization.

140432440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510822 (or 3510818 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 140432440 is about 11850.4194018608. The cubic root of 140432440 is about 519.7834897467.

Adding to 140432440 its reverse (44234041), we get a palindrome (184666481).

The spelling of 140432440 in words is "one hundred forty million, four hundred thirty-two thousand, four hundred forty".