213202200042 has 24 divisors (see below), whose sum is σ = 497471800644. Its totient is φ = 65600676864.

The previous prime is 213202200023. The next prime is 213202200047. The reversal of 213202200042 is 240002202312.

It can be written as a sum of positive squares in 2 ways, for example, as 213009017841 + 193182201 = 461529^2 + 13899^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 213202199988 and 213202200024.

It is not an unprimeable number, because it can be changed into a prime (213202200047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 455560023 + ... + 455560490.

Almost surely, 2^213202200042 is an apocalyptic number.

213202200042 is an abundant number, since it is smaller than the sum of its proper divisors (284269600602).

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

213202200042 is a wasteful number, since it uses less digits than its factorization.

213202200042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911120534 (or 911120531 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 213202200042 its reverse (240002202312), we get a palindrome (453204402354).

The spelling of 213202200042 in words is "two hundred thirteen billion, two hundred two million, two hundred thousand, forty-two".