4021444123 has 16 divisors (see below), whose sum is σ = 4376806560. Its totient is φ = 3685651200.

The previous prime is 4021444121. The next prime is 4021444201. The reversal of 4021444123 is 3214441204.

It is a cyclic number.

It is not a de Polignac number, because 4021444123 - 2¹ = 4021444121 is a prime.

It is a super-2 number, since 2×4021444123² = 32344025668822478258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4021444121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1713 + ... + 89698.

It is an arithmetic number, because the mean of its divisors is an integer number (273550410).

Almost surely, 2^4021444123 is an apocalyptic number.

4021444123 is a deficient number, since it is larger than the sum of its proper divisors (355362437).

4021444123 is a wasteful number, since it uses less digits than its factorization.

4021444123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91518.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 4021444123 is about 63414.8572733551. The cubic root of 4021444123 is about 1590.2326997476.

Adding to 4021444123 its reverse (3214441204), we get a palindrome (7235885327).

The spelling of 4021444123 in words is "four billion, twenty-one million, four hundred forty-four thousand, one hundred twenty-three".