4257984642 has 32 divisors (see below), whose sum is σ = 8787678144. Its totient is φ = 1374408000.

The previous prime is 4257984631. The next prime is 4257984667. The reversal of 4257984642 is 2464897524.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1392 + ... + 92292.

It is an arithmetic number, because the mean of its divisors is an integer number (274614942).

Almost surely, 2^4257984642 is an apocalyptic number.

4257984642 is an abundant number, since it is smaller than the sum of its proper divisors (4529693502).

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

4257984642 is a wasteful number, since it uses less digits than its factorization.

4257984642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91154.

The product of its digits is 3870720, while the sum is 51.

The square root of 4257984642 is about 65253.2347244181. The cubic root of 4257984642 is about 1620.8196637028.

The spelling of 4257984642 in words is "four billion, two hundred fifty-seven million, nine hundred eighty-four thousand, six hundred forty-two".