40321123 has 4 divisors (see below), whose sum is σ = 40333840. Its totient is φ = 40308408.

The previous prime is 40321121. The next prime is 40321129. The reversal of 40321123 is 32112304.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40321123 - 2¹ = 40321121 is a prime.

It is a super-2 number, since 2×40321123² = 3251585919962258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40321097 and 40321106.

It is not an unprimeable number, because it can be changed into a prime (40321121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2698 + ... + 9376.

It is an arithmetic number, because the mean of its divisors is an integer number (10083460).

Almost surely, 2^40321123 is an apocalyptic number.

40321123 is a deficient number, since it is larger than the sum of its proper divisors (12717).

40321123 is an equidigital number, since it uses as much as digits as its factorization.

40321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12716.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 40321123 is about 6349.8915738775. The cubic root of 40321123 is about 342.9079388116.

Adding to 40321123 its reverse (32112304), we get a palindrome (72433427).

The spelling of 40321123 in words is "forty million, three hundred twenty-one thousand, one hundred twenty-three".