1020421343 has 8 divisors (see below), whose sum is σ = 1044335760. Its totient is φ = 996727680.

The previous prime is 1020421333. The next prime is 1020421351. The reversal of 1020421343 is 3431240201.

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 1020421343 - 2²² = 1016227039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020421333) 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, 45818 + ... + 64343.

It is an arithmetic number, because the mean of its divisors is an integer number (130541970).

Almost surely, 2^1020421343 is an apocalyptic number.

1020421343 is a deficient number, since it is larger than the sum of its proper divisors (23914417).

1020421343 is a wasteful number, since it uses less digits than its factorization.

1020421343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110377.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1020421343 is about 31944.0345448098. The cubic root of 1020421343 is about 1006.7612961762.

Adding to 1020421343 its reverse (3431240201), we get a palindrome (4451661544).

The spelling of 1020421343 in words is "one billion, twenty million, four hundred twenty-one thousand, three hundred forty-three".