4256442 has 16 divisors (see below), whose sum is σ = 9458880. Its totient is φ = 1418796.

The previous prime is 4256431. The next prime is 4256459. The reversal of 4256442 is 2446524.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is an unprimeable number.

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, 39358 + ... + 39465.

It is an arithmetic number, because the mean of its divisors is an integer number (591180).

Almost surely, 2^4256442 is an apocalyptic number.

4256442 is an abundant number, since it is smaller than the sum of its proper divisors (5202438).

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

4256442 is a wasteful number, since it uses less digits than its factorization.

4256442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78834 (or 78828 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 4256442 is about 2063.1146356904. The cubic root of 4256442 is about 162.0623902350.

The spelling of 4256442 in words is "four million, two hundred fifty-six thousand, four hundred forty-two".