1026642 has 16 divisors (see below), whose sum is σ = 2063232. Its totient is φ = 340560.

The previous prime is 1026593. The next prime is 1026661. The reversal of 1026642 is 2466201.

It is a happy number.

1026642 is nontrivially palindromic in base 5.

It is a nialpdrome in base 16.

It is a congruent 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, 2167 + ... + 2597.

It is an arithmetic number, because the mean of its divisors is an integer number (128952).

2^1026642 is an apocalyptic number.

1026642 is an abundant number, since it is smaller than the sum of its proper divisors (1036590).

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

1026642 is a wasteful number, since it uses less digits than its factorization.

1026642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1026642 is about 1013.2334380586. The cubic root of 1026642 is about 100.8802947398.

The spelling of 1026642 in words is "one million, twenty-six thousand, six hundred forty-two".