3145238420 has 12 divisors (see below), whose sum is σ = 6605000724. Its totient is φ = 1258095360.

The previous prime is 3145238407. The next prime is 3145238429. The reversal of 3145238420 is 248325413.

It can be written as a sum of positive squares in 2 ways, for example, as 2010087556 + 1135150864 = 44834^2 + 33692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145238429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78630941 + ... + 78630980.

It is an arithmetic number, because the mean of its divisors is an integer number (550416727).

Almost surely, 2^3145238420 is an apocalyptic number.

It is an amenable number.

3145238420 is an abundant number, since it is smaller than the sum of its proper divisors (3459762304).

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

3145238420 is a wasteful number, since it uses less digits than its factorization.

3145238420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157261930 (or 157261928 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 3145238420 is about 56082.4252328660. The cubic root of 3145238420 is about 1465.1582134496.

The spelling of 3145238420 in words is "three billion, one hundred forty-five million, two hundred thirty-eight thousand, four hundred twenty".