42221438235 has 24 divisors (see below), whose sum is σ = 73336648320. Its totient is φ = 22471078272.

The previous prime is 42221438213. The next prime is 42221438239. The reversal of 42221438235 is 53283412224.

It is not a de Polignac number, because 42221438235 - 2⁹ = 42221437723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42221438235.

It is not an unprimeable number, because it can be changed into a prime (42221438239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 957834 + ... + 1000943.

It is an arithmetic number, because the mean of its divisors is an integer number (3055693680).

Almost surely, 2^42221438235 is an apocalyptic number.

42221438235 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42221438235 is a deficient number, since it is larger than the sum of its proper divisors (31115210085).

42221438235 is a wasteful number, since it uses less digits than its factorization.

42221438235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959267 (or 1959264 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The spelling of 42221438235 in words is "forty-two billion, two hundred twenty-one million, four hundred thirty-eight thousand, two hundred thirty-five".