320312240042 has 4 divisors (see below), whose sum is σ = 480468360066. Its totient is φ = 160156120020.

The previous prime is 320312239997. The next prime is 320312240077. The reversal of 320312240042 is 240042213023.

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., 315079019761 + 5233220281 = 561319^2 + 72341^2 .

It is a super-2 number, since 2×320312240042² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80078060009 + ... + 80078060012.

Almost surely, 2^320312240042 is an apocalyptic number.

320312240042 is a deficient number, since it is larger than the sum of its proper divisors (160156120024).

320312240042 is a wasteful number, since it uses less digits than its factorization.

320312240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160156120023.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 320312240042 its reverse (240042213023), we get a palindrome (560354453065).

The spelling of 320312240042 in words is "three hundred twenty billion, three hundred twelve million, two hundred forty thousand, forty-two".