1240002425 has 6 divisors (see below), whose sum is σ = 1537603038. Its totient is φ = 992001920.

The previous prime is 1240002409. The next prime is 1240002431. The reversal of 1240002425 is 5242000421.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 229461904 + 1010540521 = 15148^2 + 31789^2 .

It is not a de Polignac number, because 1240002425 - 2⁴ = 1240002409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240002397 and 1240002406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24800024 + ... + 24800073.

It is an arithmetic number, because the mean of its divisors is an integer number (256267173).

Almost surely, 2^1240002425 is an apocalyptic number.

It is an amenable number.

1240002425 is a deficient number, since it is larger than the sum of its proper divisors (297600613).

1240002425 is an equidigital number, since it uses as much as digits as its factorization.

1240002425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49600107 (or 49600102 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1240002425 is about 35213.6681559874. The cubic root of 1240002425 is about 1074.3377713292.

Adding to 1240002425 its reverse (5242000421), we get a palindrome (6482002846).

The spelling of 1240002425 in words is "one billion, two hundred forty million, two thousand, four hundred twenty-five".