40440020242240 has 28 divisors (see below), whose sum is σ = 96297798202596. Its totient is φ = 16176008096768.

The previous prime is 40440020242231. The next prime is 40440020242243. The reversal of 40440020242240 is 4224202004404.

It can be written as a sum of positive squares in 2 ways, for example, as 22851994701376 + 17588025540864 = 4780376^2 + 4193808^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40440020242199 and 40440020242208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440020242243) 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, 63187531309 + ... + 63187531948.

Almost surely, 2^{40440020242240} is an apocalyptic number.

40440020242240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40440020242240 is an abundant number, since it is smaller than the sum of its proper divisors (55857777960356).

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

40440020242240 is a wasteful number, since it uses less digits than its factorization.

40440020242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126375063274 (or 126375063264 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 40440020242240 its reverse (4224202004404), we get a palindrome (44664222246644).

The spelling of 40440020242240 in words is "forty trillion, four hundred forty billion, twenty million, two hundred forty-two thousand, two hundred forty".