213042412 has 24 divisors (see below), whose sum is σ = 407090880. Its totient is φ = 96748560.

The previous prime is 213042409. The next prime is 213042413. The reversal of 213042412 is 214240312.

213042412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213042412.

It is not an unprimeable number, because it can be changed into a prime (213042413) 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, 82639 + ... + 85177.

It is an arithmetic number, because the mean of its divisors is an integer number (16962120).

Almost surely, 2^213042412 is an apocalyptic number.

213042412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213042412 is a deficient number, since it is larger than the sum of its proper divisors (194048468).

213042412 is a wasteful number, since it uses less digits than its factorization.

213042412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461 (or 4459 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 213042412 is about 14595.9724581817. The cubic root of 213042412 is about 597.2488975981.

Adding to 213042412 its reverse (214240312), we get a palindrome (427282724).

It can be divided in two parts, 21304 and 2412, that added together give a square (23716 = 154²).

The spelling of 213042412 in words is "two hundred thirteen million, forty-two thousand, four hundred twelve".