40242243425 has 12 divisors (see below), whose sum is σ = 49915600956. Its totient is φ = 32183976000.

The previous prime is 40242243397. The next prime is 40242243439. The reversal of 40242243425 is 52434224204.

It can be written as a sum of positive squares in 6 ways, for example, as 10341262864 + 29900980561 = 101692^2 + 172919^2 .

It is not a de Polignac number, because 40242243425 - 2⁶ = 40242243361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40242243391 and 40242243400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161294 + ... + 326343.

It is an arithmetic number, because the mean of its divisors is an integer number (4159633413).

Almost surely, 2^40242243425 is an apocalyptic number.

It is an amenable number.

40242243425 is a deficient number, since it is larger than the sum of its proper divisors (9673357531).

40242243425 is a wasteful number, since it uses less digits than its factorization.

40242243425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490948 (or 490943 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 32.

Adding to 40242243425 its reverse (52434224204), we get a palindrome (92676467629).

The spelling of 40242243425 in words is "forty billion, two hundred forty-two million, two hundred forty-three thousand, four hundred twenty-five".