4251307842 has 28 divisors (see below), whose sum is σ = 9561072150. Its totient is φ = 1417102128.

The previous prime is 4251307829. The next prime is 4251307847. The reversal of 4251307842 is 2487031524.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2936447721 + 1314860121 = 54189^2 + 36261^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4251307797 and 4251307806.

It is not an unprimeable number, because it can be changed into a prime (4251307847) by changing a digit.

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 13 ways as a sum of consecutive naturals, for example, 1456467 + ... + 1459382.

Almost surely, 2^4251307842 is an apocalyptic number.

4251307842 is an abundant number, since it is smaller than the sum of its proper divisors (5309764308).

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

4251307842 is an equidigital number, since it uses as much as digits as its factorization.

4251307842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915869 (or 2915854 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 4251307842 is about 65202.0539707148. The cubic root of 4251307842 is about 1619.9720365544.

The spelling of 4251307842 in words is "four billion, two hundred fifty-one million, three hundred seven thousand, eight hundred forty-two".