1021923442 has 32 divisors (see below), whose sum is σ = 1644499584. Its totient is φ = 475094400.

The previous prime is 1021923439. The next prime is 1021923443. The reversal of 1021923442 is 2443291201.

1021923442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1021923442.

It is not an unprimeable number, because it can be changed into a prime (1021923443) 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, 623448 + ... + 625084.

It is an arithmetic number, because the mean of its divisors is an integer number (51390612).

Almost surely, 2^1021923442 is an apocalyptic number.

1021923442 is a deficient number, since it is larger than the sum of its proper divisors (622576142).

1021923442 is a wasteful number, since it uses less digits than its factorization.

1021923442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1021923442 is about 31967.5373152203. The cubic root of 1021923442 is about 1007.2550509441.

The spelling of 1021923442 in words is "one billion, twenty-one million, nine hundred twenty-three thousand, four hundred forty-two".