240420042355 has 16 divisors (see below), whose sum is σ = 290326283424. Its totient is φ = 191121638400.

The previous prime is 240420042353. The next prime is 240420042367. The reversal of 240420042355 is 553240024042.

It is not a de Polignac number, because 240420042355 - 2¹ = 240420042353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240420042353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5111907 + ... + 5158723.

It is an arithmetic number, because the mean of its divisors is an integer number (18145392714).

Almost surely, 2^240420042355 is an apocalyptic number.

240420042355 is a deficient number, since it is larger than the sum of its proper divisors (49906241069).

240420042355 is a wasteful number, since it uses less digits than its factorization.

240420042355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53286.

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 240420042355 its reverse (553240024042), we get a palindrome (793660066397).

The spelling of 240420042355 in words is "two hundred forty billion, four hundred twenty million, forty-two thousand, three hundred fifty-five".