1020230421 has 24 divisors (see below), whose sum is σ = 1586617344. Its totient is φ = 581434560.

The previous prime is 1020230417. The next prime is 1020230437. The reversal of 1020230421 is 1240320201.

It is not a de Polignac number, because 1020230421 - 2² = 1020230417 is a prime.

It is a super-2 number, since 2×1020230421² = 2081740223867674482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1020230421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020230461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47241 + ... + 65361.

It is an arithmetic number, because the mean of its divisors is an integer number (66109056).

Almost surely, 2^1020230421 is an apocalyptic number.

It is an amenable number.

1020230421 is a deficient number, since it is larger than the sum of its proper divisors (566386923).

1020230421 is a wasteful number, since it uses less digits than its factorization.

1020230421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18521 (or 18514 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1020230421 is about 31941.0460223206. The cubic root of 1020230421 is about 1006.6985035300.

Adding to 1020230421 its reverse (1240320201), we get a palindrome (2260550622).

The spelling of 1020230421 in words is "one billion, twenty million, two hundred thirty thousand, four hundred twenty-one".