140230440 has 256 divisors, whose sum is σ = 543168000. Its totient is φ = 31912704.

The previous prime is 140230427. The next prime is 140230459. The reversal of 140230440 is 44032041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 612246 + ... + 612474.

It is an arithmetic number, because the mean of its divisors is an integer number (2121750).

Almost surely, 2^140230440 is an apocalyptic number.

140230440 is a gapful number since it is divisible by the number (10) 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 140230440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271584000).

140230440 is an abundant number, since it is smaller than the sum of its proper divisors (402937560).

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

140230440 is an equidigital number, since it uses as much as digits as its factorization.

140230440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 140230440 is about 11841.8934296843. The cubic root of 140230440 is about 519.5341488586.

Adding to 140230440 its reverse (44032041), we get a palindrome (184262481).

The spelling of 140230440 in words is "one hundred forty million, two hundred thirty thousand, four hundred forty".