4219257 has 16 divisors (see below), whose sum is σ = 6459392. Its totient is φ = 2399760.

The previous prime is 4219231. The next prime is 4219261. The reversal of 4219257 is 7529124.

It is not a de Polignac number, because 4219257 - 2⁸ = 4219001 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

4219257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4219217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6648 + ... + 7254.

It is an arithmetic number, because the mean of its divisors is an integer number (403712).

Almost surely, 2^4219257 is an apocalyptic number.

It is an amenable number.

4219257 is a deficient number, since it is larger than the sum of its proper divisors (2240135).

4219257 is a wasteful number, since it uses less digits than its factorization.

4219257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948.

The product of its digits is 5040, while the sum is 30.

The square root of 4219257 is about 2054.0830070861. The cubic root of 4219257 is about 161.5890743724.

The spelling of 4219257 in words is "four million, two hundred nineteen thousand, two hundred fifty-seven".