1021942064 has 80 divisors (see below), whose sum is σ = 2335163040. Its totient is φ = 427130880.

The previous prime is 1021942057. The next prime is 1021942069. The reversal of 1021942064 is 4602491201.

1021942064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1021942069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 724592 + ... + 726000.

It is an arithmetic number, because the mean of its divisors is an integer number (29189538).

Almost surely, 2^1021942064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021942064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167581520).

1021942064 is an abundant number, since it is smaller than the sum of its proper divisors (1313220976).

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

1021942064 is a wasteful number, since it uses less digits than its factorization.

1021942064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758 (or 1752 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1021942064 is about 31967.8285781190. The cubic root of 1021942064 is about 1007.2611691420.

The spelling of 1021942064 in words is "one billion, twenty-one million, nine hundred forty-two thousand, sixty-four".