1020302643 has 8 divisors (see below), whose sum is σ = 1361096128. Its totient is φ = 679855464.

The previous prime is 1020302587. The next prime is 1020302669. The reversal of 1020302643 is 3462030201.

It is a happy number.

1020302643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020302643 - 2⁶ = 1020302579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020302683) 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, 79621 + ... + 91542.

It is an arithmetic number, because the mean of its divisors is an integer number (170137016).

Almost surely, 2^1020302643 is an apocalyptic number.

1020302643 is a deficient number, since it is larger than the sum of its proper divisors (340793485).

1020302643 is a wasteful number, since it uses less digits than its factorization.

1020302643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173153.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1020302643 is about 31942.1765538919. The cubic root of 1020302643 is about 1006.7222576618.

Adding to 1020302643 its reverse (3462030201), we get a palindrome (4482332844).

The spelling of 1020302643 in words is "one billion, twenty million, three hundred two thousand, six hundred forty-three".