1020333421 has 16 divisors (see below), whose sum is σ = 1164965760. Its totient is φ = 887569920.

The previous prime is 1020333407. The next prime is 1020333437. The reversal of 1020333421 is 1243330201.

It is a cyclic number.

It is not a de Polignac number, because 1020333421 - 2¹⁷ = 1020202349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020333401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25281 + ... + 51766.

It is an arithmetic number, because the mean of its divisors is an integer number (72810360).

Almost surely, 2^1020333421 is an apocalyptic number.

It is an amenable number.

1020333421 is a deficient number, since it is larger than the sum of its proper divisors (144632339).

1020333421 is a wasteful number, since it uses less digits than its factorization.

1020333421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77124.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1020333421 is about 31942.6583270710. The cubic root of 1020333421 is about 1006.7323803400.

Adding to 1020333421 its reverse (1243330201), we get a palindrome (2263663622).

The spelling of 1020333421 in words is "one billion, twenty million, three hundred thirty-three thousand, four hundred twenty-one".