426642 has 16 divisors (see below), whose sum is σ = 859872. Its totient is φ = 141120.

The previous prime is 426641. The next prime is 426661. The reversal of 426642 is 246624.

It is not an unprimeable number, because it can be changed into a prime (426641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098 + ... + 1434.

It is an arithmetic number, because the mean of its divisors is an integer number (53742).

2⁴²⁶⁶⁴² is an apocalyptic number.

426642 is an abundant number, since it is smaller than the sum of its proper divisors (433230).

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

426642 is a wasteful number, since it uses less digits than its factorization.

426642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553.

The product of its digits is 2304, while the sum is 24.

The square root of 426642 is about 653.1783829858. The cubic root of 426642 is about 75.2814315186.

The spelling of 426642 in words is "four hundred twenty-six thousand, six hundred forty-two".