1021023204 has 12 divisors (see below), whose sum is σ = 2382387504. Its totient is φ = 340341064.

The previous prime is 1021023203. The next prime is 1021023209. The reversal of 1021023204 is 4023201201.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1021023203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42542622 + ... + 42542645.

It is an arithmetic number, because the mean of its divisors is an integer number (198532292).

Almost surely, 2^1021023204 is an apocalyptic number.

It is an amenable number.

1021023204 is an abundant number, since it is smaller than the sum of its proper divisors (1361364300).

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

1021023204 is a wasteful number, since it uses less digits than its factorization.

1021023204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85085274 (or 85085272 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1021023204 is about 31953.4537100452. The cubic root of 1021023204 is about 1006.9591919684.

Adding to 1021023204 its reverse (4023201201), we get a palindrome (5044224405).

The spelling of 1021023204 in words is "one billion, twenty-one million, twenty-three thousand, two hundred four".