1042654321 has 2 divisors, whose sum is σ = 1042654322. Its totient is φ = 1042654320.

The previous prime is 1042654307. The next prime is 1042654381. The reversal of 1042654321 is 1234562401.

1042654321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1028100096 + 14554225 = 32064^2 + 3815^2 .

It is an emirp because it is prime and its reverse (1234562401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042654321 - 2²¹ = 1040557169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1042654321.

It is not a weakly prime, because it can be changed into another prime (1042654381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521327160 + 521327161.

It is an arithmetic number, because the mean of its divisors is an integer number (521327161).

Almost surely, 2^1042654321 is an apocalyptic number.

It is an amenable number.

1042654321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042654321 is an equidigital number, since it uses as much as digits as its factorization.

1042654321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1042654321 is about 32290.1582684260. The cubic root of 1042654321 is about 1014.0206107615.

The spelling of 1042654321 in words is "one billion, forty-two million, six hundred fifty-four thousand, three hundred twenty-one".