3125420240 has 20 divisors (see below), whose sum is σ = 7266602244. Its totient is φ = 1250168064.

The previous prime is 3125420239. The next prime is 3125420269. The reversal of 3125420240 is 420245213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2063703184 + 1061717056 = 45428^2 + 32584^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19533797 + ... + 19533956.

Almost surely, 2^3125420240 is an apocalyptic number.

It is an amenable number.

3125420240 is an abundant number, since it is smaller than the sum of its proper divisors (4141182004).

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

3125420240 is a wasteful number, since it uses less digits than its factorization.

3125420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39067766 (or 39067760 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 3125420240 is about 55905.4580519648. The cubic root of 3125420240 is about 1462.0744015938.

Adding to 3125420240 its reverse (420245213), we get a palindrome (3545665453).

The spelling of 3125420240 in words is "three billion, one hundred twenty-five million, four hundred twenty thousand, two hundred forty".