140434440 has 64 divisors (see below), whose sum is σ = 425511360. Its totient is φ = 37075200.

The previous prime is 140434439. The next prime is 140434451. The reversal of 140434440 is 44434041.

It is a super-2 number, since 2×140434440² = 39443663876227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 140434440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6327 + ... + 17913.

It is an arithmetic number, because the mean of its divisors is an integer number (6648615).

Almost surely, 2^140434440 is an apocalyptic number.

140434440 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 140434440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212755680).

140434440 is an abundant number, since it is smaller than the sum of its proper divisors (285076920).

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

140434440 is a wasteful number, since it uses less digits than its factorization.

140434440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11702 (or 11698 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 140434440 is about 11850.5037867594. The cubic root of 140434440 is about 519.7859572726.

Adding to 140434440 its reverse (44434041), we get a palindrome (184868481).

The spelling of 140434440 in words is "one hundred forty million, four hundred thirty-four thousand, four hundred forty".