1021842764 has 24 divisors (see below), whose sum is σ = 1839517680. Its totient is φ = 496310976.

The previous prime is 1021842761. The next prime is 1021842779. The reversal of 1021842764 is 4672481201.

It is not an unprimeable number, because it can be changed into a prime (1021842761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92294 + ... + 102770.

It is an arithmetic number, because the mean of its divisors is an integer number (76646570).

Almost surely, 2^1021842764 is an apocalyptic number.

It is an amenable number.

1021842764 is a deficient number, since it is larger than the sum of its proper divisors (817674916).

1021842764 is a wasteful number, since it uses less digits than its factorization.

1021842764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11177 (or 11175 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 1021842764 is about 31966.2754164448. The cubic root of 1021842764 is about 1007.2285435893.

The spelling of 1021842764 in words is "one billion, twenty-one million, eight hundred forty-two thousand, seven hundred sixty-four".