42565121322 has 64 divisors (see below), whose sum is σ = 90792576000. Its totient is φ = 13256988416.

The previous prime is 42565121311. The next prime is 42565121329. The reversal of 42565121322 is 22312156524.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42565121329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25533133 + ... + 25534799.

It is an arithmetic number, because the mean of its divisors is an integer number (1418634000).

Almost surely, 2^42565121322 is an apocalyptic number.

42565121322 is an abundant number, since it is smaller than the sum of its proper divisors (48227454678).

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

42565121322 is a wasteful number, since it uses less digits than its factorization.

42565121322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355.

The product of its digits is 28800, while the sum is 33.

Adding to 42565121322 its reverse (22312156524), we get a palindrome (64877277846).

The spelling of 42565121322 in words is "forty-two billion, five hundred sixty-five million, one hundred twenty-one thousand, three hundred twenty-two".