42120223204 has 12 divisors (see below), whose sum is σ = 73961963964. Its totient is φ = 20988233504.

The previous prime is 42120223157. The next prime is 42120223237. The reversal of 42120223204 is 40232202124.

It can be written as a sum of positive squares in 2 ways, for example, as 28968720804 + 13151502400 = 170202^2 + 114680^2 .

It is a super-2 number, since 2×42120223204² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17968207 + ... + 17970550.

It is an arithmetic number, because the mean of its divisors is an integer number (6163496997).

Almost surely, 2^42120223204 is an apocalyptic number.

It is an amenable number.

42120223204 is a deficient number, since it is larger than the sum of its proper divisors (31841740760).

42120223204 is a wasteful number, since it uses less digits than its factorization.

42120223204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35939054 (or 35939052 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 42120223204 its reverse (40232202124), we get a palindrome (82352425328).

The spelling of 42120223204 in words is "forty-two billion, one hundred twenty million, two hundred twenty-three thousand, two hundred four".