415205123 has 2 divisors, whose sum is σ = 415205124. Its totient is φ = 415205122.

The previous prime is 415205113. The next prime is 415205171. The reversal of 415205123 is 321502514.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-415205123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (415205113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207602561 + 207602562.

It is an arithmetic number, because the mean of its divisors is an integer number (207602562).

Almost surely, 2^415205123 is an apocalyptic number.

415205123 is a deficient number, since it is larger than the sum of its proper divisors (1).

415205123 is an equidigital number, since it uses as much as digits as its factorization.

415205123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 415205123 is about 20376.5827115343. The cubic root of 415205123 is about 746.0264655059.

Adding to 415205123 its reverse (321502514), we get a palindrome (736707637).

The spelling of 415205123 in words is "four hundred fifteen million, two hundred five thousand, one hundred twenty-three".