402210012 has 48 divisors (see below), whose sum is σ = 990066560. Its totient is φ = 126733248.

The previous prime is 402209989. The next prime is 402210013. The reversal of 402210012 is 210012204.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 402210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402210013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117558 + ... + 120930.

Almost surely, 2^402210012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402210012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495033280).

402210012 is an abundant number, since it is smaller than the sum of its proper divisors (587856548).

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

402210012 is a wasteful number, since it uses less digits than its factorization.

402210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922 (or 3920 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 402210012 is about 20055.1741952046. The cubic root of 402210012 is about 738.1607672612.

Adding to 402210012 its reverse (210012204), we get a palindrome (612222216).

The spelling of 402210012 in words is "four hundred two million, two hundred ten thousand, twelve".