213042012 has 24 divisors (see below), whose sum is σ = 505248912. Its totient is φ = 69849600.

The previous prime is 213042001. The next prime is 213042019. The reversal of 213042012 is 210240312.

213042012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213041982 and 213042000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213042019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144789 + ... + 146252.

It is an arithmetic number, because the mean of its divisors is an integer number (21052038).

Almost surely, 2^213042012 is an apocalyptic number.

It is an amenable number.

213042012 is an abundant number, since it is smaller than the sum of its proper divisors (292206900).

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

213042012 is a wasteful number, since it uses less digits than its factorization.

213042012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291109 (or 291107 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 213042012 is about 14595.9587557652. The cubic root of 213042012 is about 597.2485238076.

Adding to 213042012 its reverse (210240312), we get a palindrome (423282324).

The spelling of 213042012 in words is "two hundred thirteen million, forty-two thousand, twelve".