240120285405 has 128 divisors (see below), whose sum is σ = 516782923776. Its totient is φ = 91945497600.

The previous prime is 240120285337. The next prime is 240120285413. The reversal of 240120285405 is 504582021042.

It is not a de Polignac number, because 240120285405 - 2⁷ = 240120285277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8349000 + ... + 8377710.

It is an arithmetic number, because the mean of its divisors is an integer number (4037366592).

Almost surely, 2^240120285405 is an apocalyptic number.

It is an amenable number.

240120285405 is an abundant number, since it is smaller than the sum of its proper divisors (276662638371).

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

240120285405 is a wasteful number, since it uses less digits than its factorization.

240120285405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29307.

The product of its (nonzero) digits is 25600, while the sum is 33.

It can be divided in two parts, 240120 and 285405, that added together give a palindrome (525525).

The spelling of 240120285405 in words is "two hundred forty billion, one hundred twenty million, two hundred eighty-five thousand, four hundred five".