405012 has 12 divisors (see below), whose sum is σ = 945056. Its totient is φ = 135000.

The previous prime is 405011. The next prime is 405029. The reversal of 405012 is 210504.

405012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 33751 = 405012 / (4 + 0 + 5 + 0 + 1 + 2).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16864 + ... + 16887.

2⁴⁰⁵⁰¹² is an apocalyptic number.

It is an amenable number.

405012 is an abundant number, since it is smaller than the sum of its proper divisors (540044).

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

405012 is a wasteful number, since it uses less digits than its factorization.

405012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33758 (or 33756 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 405012 is about 636.4055310885. The cubic root of 405012 is about 73.9870929522.

Adding to 405012 its reverse (210504), we get a palindrome (615516).

The spelling of 405012 in words is "four hundred five thousand, twelve".