4042402143021 has 24 divisors (see below), whose sum is σ = 6459561950400. Its totient is φ = 2415434481600.

The previous prime is 4042402142963. The next prime is 4042402143041. The reversal of 4042402143021 is 1203412042404.

4042402143021 is a `hidden beast` number, since 4 + 0 + 424 + 0 + 214 + 3 + 0 + 21 = 666.

4042402143021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4042402143021 - 2³⁰ = 4041328401197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042402143041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287544696 + ... + 287558753.

It is an arithmetic number, because the mean of its divisors is an integer number (269148414600).

Almost surely, 2^{4042402143021} is an apocalyptic number.

It is an amenable number.

4042402143021 is a deficient number, since it is larger than the sum of its proper divisors (2417159807379).

4042402143021 is a wasteful number, since it uses less digits than its factorization.

4042402143021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575103537 (or 575103534 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 4042402143021 its reverse (1203412042404), we get a palindrome (5245814185425).

The spelling of 4042402143021 in words is "four trillion, forty-two billion, four hundred two million, one hundred forty-three thousand, twenty-one".