4042220123 has 4 divisors (see below), whose sum is σ = 4217968848. Its totient is φ = 3866471400.

The previous prime is 4042220069. The next prime is 4042220159. The reversal of 4042220123 is 3210222404.

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

It is a cyclic number.

It is not a de Polignac number, because 4042220123 - 2¹² = 4042216027 is a prime.

It is a super-3 number, since 3×4042220123³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4042220095 and 4042220104.

It is not an unprimeable number, because it can be changed into a prime (4042220173) 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, 87874328 + ... + 87874373.

It is an arithmetic number, because the mean of its divisors is an integer number (1054492212).

Almost surely, 2^4042220123 is an apocalyptic number.

4042220123 is a deficient number, since it is larger than the sum of its proper divisors (175748725).

4042220123 is a wasteful number, since it uses less digits than its factorization.

4042220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175748724.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4042220123 is about 63578.4564376959. The cubic root of 4042220123 is about 1592.9665386675.

Adding to 4042220123 its reverse (3210222404), we get a palindrome (7252442527).

The spelling of 4042220123 in words is "four billion, forty-two million, two hundred twenty thousand, one hundred twenty-three".