140134440 has 64 divisors (see below), whose sum is σ = 427550400. Its totient is φ = 36733952.

The previous prime is 140134439. The next prime is 140134441. The reversal of 140134440 is 44431041.

It is an interprime number because it is at equal distance from previous prime (140134439) and next prime (140134441).

It is a super-2 number, since 2×140134440² = 39275322548227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140134441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2817 + ... + 16976.

It is an arithmetic number, because the mean of its divisors is an integer number (6680475).

Almost surely, 2^140134440 is an apocalyptic number.

140134440 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 140134440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213775200).

140134440 is an abundant number, since it is smaller than the sum of its proper divisors (287415960).

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

140134440 is a wasteful number, since it uses less digits than its factorization.

140134440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19866 (or 19862 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 140134440 is about 11837.8393298777. The cubic root of 140134440 is about 519.4155662743.

Adding to 140134440 its reverse (44431041), we get a palindrome (184565481).

The spelling of 140134440 in words is "one hundred forty million, one hundred thirty-four thousand, four hundred forty".