140355220 has 12 divisors (see below), whose sum is σ = 294746004. Its totient is φ = 56142080.

The previous prime is 140355203. The next prime is 140355221. The reversal of 140355220 is 22553041.

It can be written as a sum of positive squares in 2 ways, for example, as 71166096 + 69189124 = 8436^2 + 8318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140355191 and 140355200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140355221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3508861 + ... + 3508900.

It is an arithmetic number, because the mean of its divisors is an integer number (24562167).

Almost surely, 2^140355220 is an apocalyptic number.

140355220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140355220 is an abundant number, since it is smaller than the sum of its proper divisors (154390784).

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

140355220 is a wasteful number, since it uses less digits than its factorization.

140355220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7017770 (or 7017768 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 140355220 is about 11847.1608413155. The cubic root of 140355220 is about 519.6882006520.

The spelling of 140355220 in words is "one hundred forty million, three hundred fifty-five thousand, two hundred twenty".