11423021 has 8 divisors (see below), whose sum is σ = 11715840. Its totient is φ = 11132368.

The previous prime is 11423003. The next prime is 11423023. The reversal of 11423021 is 12032411.

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 11423021 - 2²² = 7228717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11422987 and 11423005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16535 + ... + 17211.

It is an arithmetic number, because the mean of its divisors is an integer number (1464480).

Almost surely, 2^11423021 is an apocalyptic number.

It is an amenable number.

11423021 is a deficient number, since it is larger than the sum of its proper divisors (292819).

11423021 is an equidigital number, since it uses as much as digits as its factorization.

11423021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 11423021 is about 3379.7959997609. The cubic root of 11423021 is about 225.2131050931.

Adding to 11423021 its reverse (12032411), we get a palindrome (23455432).

The spelling of 11423021 in words is "eleven million, four hundred twenty-three thousand, twenty-one".