213142422 has 32 divisors (see below), whose sum is σ = 451943424. Its totient is φ = 66895200.

The previous prime is 213142411. The next prime is 213142429. The reversal of 213142422 is 224241312.

213142422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213142429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8604 + ... + 22367.

It is an arithmetic number, because the mean of its divisors is an integer number (14123232).

Almost surely, 2^213142422 is an apocalyptic number.

213142422 is an abundant number, since it is smaller than the sum of its proper divisors (238801002).

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

213142422 is a wasteful number, since it uses less digits than its factorization.

213142422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31044.

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

The square root of 213142422 is about 14599.3980012876. The cubic root of 213142422 is about 597.3423398967.

Adding to 213142422 its reverse (224241312), we get a palindrome (437383734).

The spelling of 213142422 in words is "two hundred thirteen million, one hundred forty-two thousand, four hundred twenty-two".