213344240042 has 4 divisors (see below), whose sum is σ = 320016360066. Its totient is φ = 106672120020.

The previous prime is 213344240023. The next prime is 213344240117. The reversal of 213344240042 is 240042443312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 168387943201 + 44956296841 = 410351^2 + 212029^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213344239987 and 213344240014.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53336060009 + ... + 53336060012.

Almost surely, 2^213344240042 is an apocalyptic number.

213344240042 is a deficient number, since it is larger than the sum of its proper divisors (106672120024).

213344240042 is a wasteful number, since it uses less digits than its factorization.

213344240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106672120023.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 213344240042 its reverse (240042443312), we get a palindrome (453386683354).

The spelling of 213344240042 in words is "two hundred thirteen billion, three hundred forty-four million, two hundred forty thousand, forty-two".