4457842 has 8 divisors (see below), whose sum is σ = 7080156. Its totient is φ = 2097792.

The previous prime is 4457839. The next prime is 4457857. The reversal of 4457842 is 2487544.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4456321 + 1521 = 2111^2 + 39^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 131113 = 4457842 / (4 + 4 + 5 + 7 + 8 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 4457798 and 4457807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65523 + ... + 65590.

Almost surely, 2^4457842 is an apocalyptic number.

4457842 is a deficient number, since it is larger than the sum of its proper divisors (2622314).

4457842 is a wasteful number, since it uses less digits than its factorization.

4457842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131132.

The product of its digits is 35840, while the sum is 34.

The square root of 4457842 is about 2111.3602250682. The cubic root of 4457842 is about 164.5791786307.

The spelling of 4457842 in words is "four million, four hundred fifty-seven thousand, eight hundred forty-two".