405745122 has 8 divisors (see below), whose sum is σ = 811490256. Its totient is φ = 135248372.

The previous prime is 405745111. The next prime is 405745141. The reversal of 405745122 is 221547504.

It is a sphenic number, since it is the product of 3 distinct primes.

405745122 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 405745122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33812088 + ... + 33812099.

It is an arithmetic number, because the mean of its divisors is an integer number (101436282).

Almost surely, 2^405745122 is an apocalyptic number.

405745122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405745122 is a wasteful number, since it uses less digits than its factorization.

405745122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67624192.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 405745122 is about 20143.1159952973. The cubic root of 405745122 is about 740.3170798455.

The spelling of 405745122 in words is "four hundred five million, seven hundred forty-five thousand, one hundred twenty-two".