1020724 has 6 divisors (see below), whose sum is σ = 1786274. Its totient is φ = 510360.

The previous prime is 1020709. The next prime is 1020743. The reversal of 1020724 is 4270201.

It can be written as a sum of positive squares in only one way, i.e., 868624 + 152100 = 932^2 + 390^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1020698 and 1020707.

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 as a sum of consecutive naturals, namely, 127587 + ... + 127594.

2^1020724 is an apocalyptic number.

It is an amenable number.

1020724 is a deficient number, since it is larger than the sum of its proper divisors (765550).

1020724 is a wasteful number, since it uses less digits than its factorization.

1020724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255185 (or 255183 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 1020724 is about 1010.3088636650. The cubic root of 1020724 is about 100.6860821480.

Adding to 1020724 its reverse (4270201), we get a palindrome (5290925).

The spelling of 1020724 in words is "one million, twenty thousand, seven hundred twenty-four".