213423420042 has 48 divisors (see below), whose sum is σ = 559563930432. Its totient is φ = 57391171200.

The previous prime is 213423419969. The next prime is 213423420047. The reversal of 213423420042 is 240024324312.

213423420042 is a `hidden beast` number, since 213 + 4 + 23 + 420 + 0 + 4 + 2 = 666.

213423420042 is digitally balanced in base 3, 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 = 213423419988 and 213423420015.

It is not an unprimeable number, because it can be changed into a prime (213423420047) 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 23 ways as a sum of consecutive naturals, for example, 49816584 + ... + 49820867.

It is an arithmetic number, because the mean of its divisors is an integer number (11657581884).

Almost surely, 2^213423420042 is an apocalyptic number.

213423420042 is an abundant number, since it is smaller than the sum of its proper divisors (346140510390).

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

213423420042 is a wasteful number, since it uses less digits than its factorization.

213423420042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99637483 (or 99637480 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 213423420042 its reverse (240024324312), we get a palindrome (453447744354).

The spelling of 213423420042 in words is "two hundred thirteen billion, four hundred twenty-three million, four hundred twenty thousand, forty-two".