140235220 has 12 divisors (see below), whose sum is σ = 294494004. Its totient is φ = 56094080.

The previous prime is 140235203. The next prime is 140235229. The reversal of 140235220 is 22532041.

140235220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 105801796 + 34433424 = 10286^2 + 5868^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140235229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3505861 + ... + 3505900.

It is an arithmetic number, because the mean of its divisors is an integer number (24541167).

Almost surely, 2^140235220 is an apocalyptic number.

140235220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140235220 is an abundant number, since it is smaller than the sum of its proper divisors (154258784).

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

140235220 is a wasteful number, since it uses less digits than its factorization.

140235220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7011770 (or 7011768 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 140235220 is about 11842.0952537969. The cubic root of 140235220 is about 519.5400518685.

Adding to 140235220 its reverse (22532041), we get a palindrome (162767261).

The spelling of 140235220 in words is "one hundred forty million, two hundred thirty-five thousand, two hundred twenty".