1023013421 has 4 divisors (see below), whose sum is σ = 1044779712. Its totient is φ = 1001247132.

The previous prime is 1023013417. The next prime is 1023013457. The reversal of 1023013421 is 1243103201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1023013421 - 2² = 1023013417 is a prime.

It is a super-2 number, since 2×1023013421² = 2093112919092246482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023013421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023213421) 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 3 ways as a sum of consecutive naturals, for example, 10883075 + ... + 10883168.

It is an arithmetic number, because the mean of its divisors is an integer number (261194928).

Almost surely, 2^1023013421 is an apocalyptic number.

It is an amenable number.

1023013421 is a deficient number, since it is larger than the sum of its proper divisors (21766291).

1023013421 is an equidigital number, since it uses as much as digits as its factorization.

1023013421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21766290.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1023013421 is about 31984.5809883450. The cubic root of 1023013421 is about 1007.6130349526.

Adding to 1023013421 its reverse (1243103201), we get a palindrome (2266116622).

The spelling of 1023013421 in words is "one billion, twenty-three million, thirteen thousand, four hundred twenty-one".