1020443147 has 4 divisors (see below), whose sum is σ = 1021227600. Its totient is φ = 1019658696.

The previous prime is 1020443143. The next prime is 1020443159. The reversal of 1020443147 is 7413440201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020443147 - 2² = 1020443143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020443141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390272 + ... + 392877.

It is an arithmetic number, because the mean of its divisors is an integer number (255306900).

Almost surely, 2^1020443147 is an apocalyptic number.

1020443147 is a deficient number, since it is larger than the sum of its proper divisors (784453).

1020443147 is an equidigital number, since it uses as much as digits as its factorization.

1020443147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784452.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 1020443147 is about 31944.3758273659. The cubic root of 1020443147 is about 1006.7684668308.

Adding to 1020443147 its reverse (7413440201), we get a palindrome (8433883348).

The spelling of 1020443147 in words is "one billion, twenty million, four hundred forty-three thousand, one hundred forty-seven".