405212202 has 48 divisors (see below), whose sum is σ = 933397920. Its totient is φ = 126684000.

The previous prime is 405212201. The next prime is 405212231. The reversal of 405212202 is 202212504.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (405212201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28677 + ... + 40407.

It is an arithmetic number, because the mean of its divisors is an integer number (19445790).

Almost surely, 2^405212202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405212202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466698960).

405212202 is an abundant number, since it is smaller than the sum of its proper divisors (528185718).

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

405212202 is a wasteful number, since it uses less digits than its factorization.

405212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11859 (or 11856 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 405212202 is about 20129.8833081566. The cubic root of 405212202 is about 739.9928182892.

Adding to 405212202 its reverse (202212504), we get a palindrome (607424706).

The spelling of 405212202 in words is "four hundred five million, two hundred twelve thousand, two hundred two".