140555220 has 96 divisors (see below), whose sum is σ = 429381120. Its totient is φ = 34145280.

The previous prime is 140555203. The next prime is 140555227. The reversal of 140555220 is 22555041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140555227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60480 + ... + 62760.

It is an arithmetic number, because the mean of its divisors is an integer number (4472720).

Almost surely, 2^140555220 is an apocalyptic number.

140555220 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 140555220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214690560).

140555220 is an abundant number, since it is smaller than the sum of its proper divisors (288825900).

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

140555220 is a wasteful number, since it uses less digits than its factorization.

140555220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385 (or 2383 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 140555220 is about 11855.5986774182. The cubic root of 140555220 is about 519.9349277547.

The spelling of 140555220 in words is "one hundred forty million, five hundred fifty-five thousand, two hundred twenty".