405352123 has 16 divisors (see below), whose sum is σ = 448450560. Its totient is φ = 363333600.

The previous prime is 405352093. The next prime is 405352141. The reversal of 405352123 is 321253504.

It is a cyclic number.

It is not a de Polignac number, because 405352123 - 2⁵ = 405352091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405352223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249253 + ... + 250873.

It is an arithmetic number, because the mean of its divisors is an integer number (28028160).

Almost surely, 2^405352123 is an apocalyptic number.

405352123 is a deficient number, since it is larger than the sum of its proper divisors (43098437).

405352123 is a wasteful number, since it uses less digits than its factorization.

405352123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 405352123 is about 20133.3584630086. The cubic root of 405352123 is about 740.0779824076.

The spelling of 405352123 in words is "four hundred five million, three hundred fifty-two thousand, one hundred twenty-three".