4257642 has 8 divisors (see below), whose sum is σ = 8515296. Its totient is φ = 1419212.

The previous prime is 4257641. The next prime is 4257647. The reversal of 4257642 is 2467524.

4257642 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

4257642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (4257641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354798 + ... + 354809.

It is an arithmetic number, because the mean of its divisors is an integer number (1064412).

Almost surely, 2^4257642 is an apocalyptic number.

4257642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4257642 is a wasteful number, since it uses less digits than its factorization.

4257642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709612.

The product of its digits is 13440, while the sum is 30.

The square root of 4257642 is about 2063.4054376201. The cubic root of 4257642 is about 162.0776186500.

The spelling of 4257642 in words is "four million, two hundred fifty-seven thousand, six hundred forty-two".