202240040 has 32 divisors (see below), whose sum is σ = 460161000. Its totient is φ = 79985664.

The previous prime is 202240019. The next prime is 202240043. The reversal of 202240040 is 40042202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 58767556 + 143472484 = 7666^2 + 11978^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202239997 and 202240024.

It is not an unprimeable number, because it can be changed into a prime (202240043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24845 + ... + 31964.

Almost surely, 2^202240040 is an apocalyptic number.

202240040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202240040 is an abundant number, since it is smaller than the sum of its proper divisors (257920960).

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

202240040 is a wasteful number, since it uses less digits than its factorization.

202240040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56909 (or 56905 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 202240040 is about 14221.1124740647. The cubic root of 202240040 is about 586.9787523979.

Adding to 202240040 its reverse (40042202), we get a palindrome (242282242).

The spelling of 202240040 in words is "two hundred two million, two hundred forty thousand, forty".