1020021304 has 32 divisors (see below), whose sum is σ = 1931973120. Its totient is φ = 504855136.

The previous prime is 1020021283. The next prime is 1020021347. The reversal of 1020021304 is 4031200201.

It is a super-2 number, since 2×1020021304² = 2080886921227720832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349917 + ... + 352819.

It is an arithmetic number, because the mean of its divisors is an integer number (60374160).

Almost surely, 2^1020021304 is an apocalyptic number.

It is an amenable number.

1020021304 is a deficient number, since it is larger than the sum of its proper divisors (911951816).

1020021304 is a wasteful number, since it uses less digits than its factorization.

1020021304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339 (or 3335 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1020021304 is about 31937.7723706585. The cubic root of 1020021304 is about 1006.6297177107.

Adding to 1020021304 its reverse (4031200201), we get a palindrome (5051221505).

The spelling of 1020021304 in words is "one billion, twenty million, twenty-one thousand, three hundred four".