42231004421 has 16 divisors (see below), whose sum is σ = 44457154560. Its totient is φ = 40038828720.

The previous prime is 42231004411. The next prime is 42231004429. The reversal of 42231004421 is 12440013224.

It is a de Polignac number, because none of the positive numbers 2^k-42231004421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231004429) 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 15 ways as a sum of consecutive naturals, for example, 1263896 + ... + 1296878.

It is an arithmetic number, because the mean of its divisors is an integer number (2778572160).

Almost surely, 2^42231004421 is an apocalyptic number.

It is an amenable number.

42231004421 is a deficient number, since it is larger than the sum of its proper divisors (2226150139).

42231004421 is a wasteful number, since it uses less digits than its factorization.

42231004421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33496.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 42231004421 its reverse (12440013224), we get a palindrome (54671017645).

The spelling of 42231004421 in words is "forty-two billion, two hundred thirty-one million, four thousand, four hundred twenty-one".