1020834 has 12 divisors (see below), whose sum is σ = 2211846. Its totient is φ = 340272.

The previous prime is 1020827. The next prime is 1020839. The reversal of 1020834 is 4380201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 804609 + 216225 = 897^2 + 465^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 56713 = 1020834 / (1 + 0 + 2 + 0 + 8 + 3 + 4).

It is not an unprimeable number, because it can be changed into a prime (1020839) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 28339 + ... + 28374.

2^1020834 is an apocalyptic number.

1020834 is an abundant number, since it is smaller than the sum of its proper divisors (1191012).

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

1020834 is a wasteful number, since it uses less digits than its factorization.

1020834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56721 (or 56718 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1020834 is about 1010.3633009962. The cubic root of 1020834 is about 100.6896988852.

The spelling of 1020834 in words is "one million, twenty thousand, eight hundred thirty-four".