240042425 has 54 divisors (see below), whose sum is σ = 360139338. Its totient is φ = 158242560.

The previous prime is 240042403. The next prime is 240042437. The reversal of 240042425 is 524240042.

It can be written as a sum of positive squares in 9 ways, for example, as 92371321 + 147671104 = 9611^2 + 12152^2 .

It is not a de Polignac number, because 240042425 - 2⁸ = 240042169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 240042425.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1030109 + ... + 1030341.

It is an arithmetic number, because the mean of its divisors is an integer number (6669247).

Almost surely, 2^240042425 is an apocalyptic number.

240042425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

240042425 is a deficient number, since it is larger than the sum of its proper divisors (120096913).

240042425 is a wasteful number, since it uses less digits than its factorization.

240042425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 240042425 is about 15493.3025853109. The cubic root of 240042425 is about 621.4831169053.

Adding to 240042425 its reverse (524240042), we get a palindrome (764282467).

The spelling of 240042425 in words is "two hundred forty million, forty-two thousand, four hundred twenty-five".