213144042 has 16 divisors (see below), whose sum is σ = 426549312. Its totient is φ = 71004480.

The previous prime is 213143999. The next prime is 213144047. The reversal of 213144042 is 240441312.

213144042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213144047) 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, 667 + ... + 20657.

It is an arithmetic number, because the mean of its divisors is an integer number (26659332).

Almost surely, 2^213144042 is an apocalyptic number.

213144042 is an abundant number, since it is smaller than the sum of its proper divisors (213405270).

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

213144042 is a wasteful number, since it uses less digits than its factorization.

213144042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21773.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 213144042 is about 14599.4534829219. The cubic root of 213144042 is about 597.3438532700.

Adding to 213144042 its reverse (240441312), we get a palindrome (453585354).

The spelling of 213144042 in words is "two hundred thirteen million, one hundred forty-four thousand, forty-two".