1021603423 has 8 divisors (see below), whose sum is σ = 1085607792. Its totient is φ = 958033536.

The previous prime is 1021603403. The next prime is 1021603441. The reversal of 1021603423 is 3243061201.

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 1021603423 - 2²⁵ = 988048991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021603394 and 1021603403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021603403) 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 7 ways as a sum of consecutive naturals, for example, 103765 + ... + 113182.

It is an arithmetic number, because the mean of its divisors is an integer number (135700974).

Almost surely, 2^1021603423 is an apocalyptic number.

1021603423 is a deficient number, since it is larger than the sum of its proper divisors (64004369).

1021603423 is a wasteful number, since it uses less digits than its factorization.

1021603423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217241.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1021603423 is about 31962.5315486743. The cubic root of 1021603423 is about 1007.1498981201.

Adding to 1021603423 its reverse (3243061201), we get a palindrome (4264664624).

The spelling of 1021603423 in words is "one billion, twenty-one million, six hundred three thousand, four hundred twenty-three".