140434840 has 128 divisors (see below), whose sum is σ = 398805120. Its totient is φ = 43315200.

The previous prime is 140434831. The next prime is 140434859. The reversal of 140434840 is 48434041.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 140434799 and 140434808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148770 + ... + 149710.

It is an arithmetic number, because the mean of its divisors is an integer number (3115665).

Almost surely, 2^140434840 is an apocalyptic number.

140434840 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 140434840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199402560).

140434840 is an abundant number, since it is smaller than the sum of its proper divisors (258370280).

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

140434840 is a wasteful number, since it uses less digits than its factorization.

140434840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 140434840 is about 11850.5206636671. The cubic root of 140434840 is about 519.7864507749.

Adding to 140434840 its reverse (48434041), we get a palindrome (188868881).

The spelling of 140434840 in words is "one hundred forty million, four hundred thirty-four thousand, eight hundred forty".