405364123 has 2 divisors, whose sum is σ = 405364124. Its totient is φ = 405364122.

The previous prime is 405364111. The next prime is 405364129. The reversal of 405364123 is 321463504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405364123 - 2²¹ = 403266971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405364091 and 405364100.

It is not a weakly prime, because it can be changed into another prime (405364129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202682061 + 202682062.

It is an arithmetic number, because the mean of its divisors is an integer number (202682062).

Almost surely, 2^405364123 is an apocalyptic number.

405364123 is a deficient number, since it is larger than the sum of its proper divisors (1).

405364123 is an equidigital number, since it uses as much as digits as its factorization.

405364123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 405364123 is about 20133.6564736761. The cubic root of 405364123 is about 740.0852853981.

The spelling of 405364123 in words is "four hundred five million, three hundred sixty-four thousand, one hundred twenty-three".