4278642 has 8 divisors (see below), whose sum is σ = 8557296. Its totient is φ = 1426212.

The previous prime is 4278641. The next prime is 4278649. The reversal of 4278642 is 2468724.

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

4278642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (4278641) 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, 356548 + ... + 356559.

It is an arithmetic number, because the mean of its divisors is an integer number (1069662).

Almost surely, 2^4278642 is an apocalyptic number.

4278642 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.

4278642 is a wasteful number, since it uses less digits than its factorization.

4278642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713112.

The product of its digits is 21504, while the sum is 33.

The square root of 4278642 is about 2068.4878534814. The cubic root of 4278642 is about 162.3436539624.

The spelling of 4278642 in words is "four million, two hundred seventy-eight thousand, six hundred forty-two".