240140204405 has 8 divisors (see below), whose sum is σ = 288226408632. Its totient is φ = 192073387968.

The previous prime is 240140204389. The next prime is 240140204407. The reversal of 240140204405 is 504402041042.

It can be written as a sum of positive squares in 4 ways, for example, as 23869632004 + 216270572401 = 154498^2 + 465049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240140204405 - 2⁴ = 240140204389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240140204407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4819682 + ... + 4869251.

It is an arithmetic number, because the mean of its divisors is an integer number (36028301079).

Almost surely, 2^240140204405 is an apocalyptic number.

It is an amenable number.

240140204405 is a deficient number, since it is larger than the sum of its proper divisors (48086204227).

240140204405 is an equidigital number, since it uses as much as digits as its factorization.

240140204405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9693895.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 240140204405 its reverse (504402041042), we get a palindrome (744542245447).

The spelling of 240140204405 in words is "two hundred forty billion, one hundred forty million, two hundred four thousand, four hundred five".