4002013421 has 8 divisors (see below), whose sum is σ = 4577705664. Its totient is φ = 3427315200.

The previous prime is 4002013399. The next prime is 4002013423. The reversal of 4002013421 is 1243102004.

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 4002013421 - 2²⁶ = 3934904557 is a prime.

It is a super-2 number, since 2×4002013421² = 32032222843728246482, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4002013421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002013423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239855 + ... + 255996.

It is an arithmetic number, because the mean of its divisors is an integer number (572213208).

Almost surely, 2^4002013421 is an apocalyptic number.

It is an amenable number.

4002013421 is a deficient number, since it is larger than the sum of its proper divisors (575692243).

4002013421 is a wasteful number, since it uses less digits than its factorization.

4002013421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497011.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4002013421 is about 63261.4686914555. The cubic root of 4002013421 is about 1587.6673495102.

Adding to 4002013421 its reverse (1243102004), we get a palindrome (5245115425).

The spelling of 4002013421 in words is "four billion, two million, thirteen thousand, four hundred twenty-one".