1028742 has 48 divisors (see below), whose sum is σ = 2457840. Its totient is φ = 285120.

The previous prime is 1028737. The next prime is 1028747. The reversal of 1028742 is 2478201.

It is an interprime number because it is at equal distance from previous prime (1028737) and next prime (1028747).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028747) 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 23 ways as a sum of consecutive naturals, for example, 9384 + ... + 9492.

It is an arithmetic number, because the mean of its divisors is an integer number (51205).

2^1028742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1028742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1228920).

1028742 is an abundant number, since it is smaller than the sum of its proper divisors (1429098).

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

1028742 is a wasteful number, since it uses less digits than its factorization.

1028742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1028742 is about 1014.2691950365. The cubic root of 1028742 is about 100.9490315657.

It can be divided in two parts, 1028 and 742, that added together give a triangular number (1770 = T₅₉).

The spelling of 1028742 in words is "one million, twenty-eight thousand, seven hundred forty-two".