4257138 has 16 divisors (see below), whose sum is σ = 8578080. Its totient is φ = 1408416.

The previous prime is 4257133. The next prime is 4257161. The reversal of 4257138 is 8317524.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4257131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1768 + ... + 3411.

It is an arithmetic number, because the mean of its divisors is an integer number (536130).

Almost surely, 2^4257138 is an apocalyptic number.

4257138 is an abundant number, since it is smaller than the sum of its proper divisors (4320942).

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

4257138 is a wasteful number, since it uses less digits than its factorization.

4257138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5321.

The product of its digits is 6720, while the sum is 30.

The square root of 4257138 is about 2063.2833058017. The cubic root of 4257138 is about 162.0712230642.

The spelling of 4257138 in words is "four million, two hundred fifty-seven thousand, one hundred thirty-eight".