42227361281 has 32 divisors (see below), whose sum is σ = 52177305600. Its totient is φ = 33364552320.

The previous prime is 42227361277. The next prime is 42227361283. The reversal of 42227361281 is 18216372224.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42227361281 - 2² = 42227361277 is a prime.

It is a super-2 number, since 2×42227361281² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42227361283) 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, 2078390 + ... + 2098608.

It is an arithmetic number, because the mean of its divisors is an integer number (1630540800).

Almost surely, 2^42227361281 is an apocalyptic number.

42227361281 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42227361281 is a deficient number, since it is larger than the sum of its proper divisors (9949944319).

42227361281 is a wasteful number, since it uses less digits than its factorization.

42227361281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20669.

The product of its digits is 64512, while the sum is 38.

The spelling of 42227361281 in words is "forty-two billion, two hundred twenty-seven million, three hundred sixty-one thousand, two hundred eighty-one".