1002143421 has 24 divisors (see below), whose sum is σ = 1589462784. Its totient is φ = 628793280.

The previous prime is 1002143383. The next prime is 1002143431. The reversal of 1002143421 is 1243412001.

1002143421 is a `hidden beast` number, since 100 + 2 + 143 + 421 = 666.

It is not a de Polignac number, because 1002143421 - 2¹³ = 1002135229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002143394 and 1002143403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002143431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117165 + ... + 125426.

It is an arithmetic number, because the mean of its divisors is an integer number (66227616).

Almost surely, 2^1002143421 is an apocalyptic number.

It is an amenable number.

1002143421 is a deficient number, since it is larger than the sum of its proper divisors (587319363).

1002143421 is an equidigital number, since it uses as much as digits as its factorization.

1002143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242623 (or 242611 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1002143421 is about 31656.6489224618. The cubic root of 1002143421 is about 1000.7139638010.

Adding to 1002143421 its reverse (1243412001), we get a palindrome (2245555422).

The spelling of 1002143421 in words is "one billion, two million, one hundred forty-three thousand, four hundred twenty-one".