140205220 has 24 divisors (see below), whose sum is σ = 295384824. Its totient is φ = 55900416.

The previous prime is 140205211. The next prime is 140205223. The reversal of 140205220 is 22502041.

140205220 = T₅ + T₆ + ... + T₉₄₃.

It can be written as a sum of positive squares in 4 ways, for example, as 9834496 + 130370724 = 3136^2 + 11418^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140205194 and 140205203.

It is not an unprimeable number, because it can be changed into a prime (140205223) 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 7 ways as a sum of consecutive naturals, for example, 4939 + ... + 17458.

It is an arithmetic number, because the mean of its divisors is an integer number (12307701).

Almost surely, 2^140205220 is an apocalyptic number.

140205220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140205220 is an abundant number, since it is smaller than the sum of its proper divisors (155179604).

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

140205220 is a wasteful number, since it uses less digits than its factorization.

140205220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22719 (or 22717 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 140205220 is about 11840.8285183090. The cubic root of 140205220 is about 519.5030014682.

Adding to 140205220 its reverse (22502041), we get a palindrome (162707261).

The spelling of 140205220 in words is "one hundred forty million, two hundred five thousand, two hundred twenty".