213423021342 has 64 divisors (see below), whose sum is σ = 487207618560. Its totient is φ = 69201788832.

The previous prime is 213423021323. The next prime is 213423021347. The reversal of 213423021342 is 243120324312.

213423021342 is a `hidden beast` number, since 2 + 1 + 342 + 302 + 13 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213423021347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10585323 + ... + 10605465.

It is an arithmetic number, because the mean of its divisors is an integer number (7612619040).

Almost surely, 2^213423021342 is an apocalyptic number.

213423021342 is an abundant number, since it is smaller than the sum of its proper divisors (273784597218).

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

213423021342 is a wasteful number, since it uses less digits than its factorization.

213423021342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25494 (or 25488 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 213423021342 its reverse (243120324312), we get a palindrome (456543345654).

The spelling of 213423021342 in words is "two hundred thirteen billion, four hundred twenty-three million, twenty-one thousand, three hundred forty-two".