1021442043 has 8 divisors (see below), whose sum is σ = 1385006400. Its totient is φ = 669419528.

The previous prime is 1021442041. The next prime is 1021442047. The reversal of 1021442043 is 3402441201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021442043 - 2¹ = 1021442041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021442041) 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, 2885253 + ... + 2885606.

It is an arithmetic number, because the mean of its divisors is an integer number (173125800).

Almost surely, 2^1021442043 is an apocalyptic number.

1021442043 is a deficient number, since it is larger than the sum of its proper divisors (363564357).

1021442043 is an equidigital number, since it uses as much as digits as its factorization.

1021442043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770921.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1021442043 is about 31960.0069305374. The cubic root of 1021442043 is about 1007.0968630558.

Adding to 1021442043 its reverse (3402441201), we get a palindrome (4423883244).

The spelling of 1021442043 in words is "one billion, twenty-one million, four hundred forty-two thousand, forty-three".