40330123 has 2 divisors, whose sum is σ = 40330124. Its totient is φ = 40330122.

The previous prime is 40330117. The next prime is 40330127. The reversal of 40330123 is 32103304.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40330123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40330097 and 40330106.

It is not a weakly prime, because it can be changed into another prime (40330127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20165061 + 20165062.

It is an arithmetic number, because the mean of its divisors is an integer number (20165062).

Almost surely, 2^40330123 is an apocalyptic number.

40330123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40330123 is an equidigital number, since it uses as much as digits as its factorization.

40330123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 40330123 is about 6350.6002078544. The cubic root of 40330123 is about 342.9334501865.

Adding to 40330123 its reverse (32103304), we get a palindrome (72433427).

The spelling of 40330123 in words is "forty million, three hundred thirty thousand, one hundred twenty-three".