405252422 has 8 divisors (see below), whose sum is σ = 614709000. Its totient is φ = 200349424.

The previous prime is 405252403. The next prime is 405252427. The reversal of 405252422 is 224252504.

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

It is a junction number, because it is equal to n+sod(n) for n = 405252391 and 405252400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405252427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138172 + ... + 1138527.

It is an arithmetic number, because the mean of its divisors is an integer number (76838625).

Almost surely, 2^405252422 is an apocalyptic number.

405252422 is a deficient number, since it is larger than the sum of its proper divisors (209456578).

405252422 is a wasteful number, since it uses less digits than its factorization.

405252422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276790.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 405252422 is about 20130.8822956173. The cubic root of 405252422 is about 740.0173005451.

The spelling of 405252422 in words is "four hundred five million, two hundred fifty-two thousand, four hundred twenty-two".