3556143421 has 8 divisors (see below), whose sum is σ = 3596313600. Its totient is φ = 3516110640.

The previous prime is 3556143407. The next prime is 3556143431. The reversal of 3556143421 is 1243416553.

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 3556143421 - 2⁷ = 3556143293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3556143431) 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, 18156 + ... + 86266.

It is an arithmetic number, because the mean of its divisors is an integer number (449539200).

Almost surely, 2^3556143421 is an apocalyptic number.

It is an amenable number.

3556143421 is a deficient number, since it is larger than the sum of its proper divisors (40170179).

3556143421 is a wasteful number, since it uses less digits than its factorization.

3556143421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68699.

The product of its digits is 43200, while the sum is 34.

The square root of 3556143421 is about 59633.4085978657. The cubic root of 3556143421 is about 1526.3697693457.

Adding to 3556143421 its reverse (1243416553), we get a palindrome (4799559974).

The spelling of 3556143421 in words is "three billion, five hundred fifty-six million, one hundred forty-three thousand, four hundred twenty-one".