140434140 has 192 divisors, whose sum is σ = 496419840. Its totient is φ = 28815360.

The previous prime is 140434121. The next prime is 140434169. The reversal of 140434140 is 41434041.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 521926 + ... + 522194.

It is an arithmetic number, because the mean of its divisors is an integer number (2585520).

Almost surely, 2^140434140 is an apocalyptic number.

140434140 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 140434140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248209920).

140434140 is an abundant number, since it is smaller than the sum of its proper divisors (355985700).

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

140434140 is a wasteful number, since it uses less digits than its factorization.

140434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 410 counting only the distinct ones).

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

The square root of 140434140 is about 11850.4911290630. The cubic root of 140434140 is about 519.7855871452.

Adding to 140434140 its reverse (41434041), we get a palindrome (181868181).

Subtracting from 140434140 its reverse (41434041), we obtain a palindrome (99000099).

The spelling of 140434140 in words is "one hundred forty million, four hundred thirty-four thousand, one hundred forty".