215042225042 has 8 divisors (see below), whose sum is σ = 322968061836. Its totient is φ = 107386204432.

The previous prime is 215042225029. The next prime is 215042225071. The reversal of 215042225042 is 240522240512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 189809220241 + 25233004801 = 435671^2 + 158849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 215042224996 and 215042225014.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 67452053 + ... + 67455240.

Almost surely, 2^215042225042 is an apocalyptic number.

215042225042 is a deficient number, since it is larger than the sum of its proper divisors (107925836794).

215042225042 is a wasteful number, since it uses less digits than its factorization.

215042225042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134908092.

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 215042225042 its reverse (240522240512), we get a palindrome (455564465554).

The spelling of 215042225042 in words is "two hundred fifteen billion, forty-two million, two hundred twenty-five thousand, forty-two".