240221140 has 12 divisors (see below), whose sum is σ = 504464436. Its totient is φ = 96088448.

The previous prime is 240221129. The next prime is 240221141. The reversal of 240221140 is 41122042.

It can be written as a sum of positive squares in 2 ways, for example, as 52969284 + 187251856 = 7278^2 + 13684^2 .

It is a super-2 number, since 2×240221140² = 115412392205799200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240221141) 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, 6005509 + ... + 6005548.

It is an arithmetic number, because the mean of its divisors is an integer number (42038703).

Almost surely, 2^240221140 is an apocalyptic number.

240221140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240221140 is an abundant number, since it is smaller than the sum of its proper divisors (264243296).

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

240221140 is a wasteful number, since it uses less digits than its factorization.

240221140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12011066 (or 12011064 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 240221140 is about 15499.0690042983. The cubic root of 240221140 is about 621.6373129849.

Adding to 240221140 its reverse (41122042), we get a palindrome (281343182).

The spelling of 240221140 in words is "two hundred forty million, two hundred twenty-one thousand, one hundred forty".