42421223555 has 8 divisors (see below), whose sum is σ = 51044177472. Its totient is φ = 33844506048.

The previous prime is 42421223543. The next prime is 42421223561. The reversal of 42421223555 is 55532212424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42421223555 - 2¹⁶ = 42421158019 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11557082 + ... + 11560751.

It is an arithmetic number, because the mean of its divisors is an integer number (6380522184).

Almost surely, 2^42421223555 is an apocalyptic number.

42421223555 is a deficient number, since it is larger than the sum of its proper divisors (8622953917).

42421223555 is a wasteful number, since it uses less digits than its factorization.

42421223555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23118205.

The product of its digits is 96000, while the sum is 35.

Adding to 42421223555 its reverse (55532212424), we get a palindrome (97953435979).

The spelling of 42421223555 in words is "forty-two billion, four hundred twenty-one million, two hundred twenty-three thousand, five hundred fifty-five".