42223442251 has 4 divisors (see below), whose sum is σ = 44059244112. Its totient is φ = 40387640392.

The previous prime is 42223442207. The next prime is 42223442267. The reversal of 42223442251 is 15224432224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42223442251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42223442201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917900896 + ... + 917900941.

It is an arithmetic number, because the mean of its divisors is an integer number (11014811028).

Almost surely, 2^42223442251 is an apocalyptic number.

42223442251 is a deficient number, since it is larger than the sum of its proper divisors (1835801861).

42223442251 is a wasteful number, since it uses less digits than its factorization.

42223442251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835801860.

The product of its digits is 30720, while the sum is 31.

Adding to 42223442251 its reverse (15224432224), we get a palindrome (57447874475).

The spelling of 42223442251 in words is "forty-two billion, two hundred twenty-three million, four hundred forty-two thousand, two hundred fifty-one".