1000143421 has 4 divisors (see below), whose sum is σ = 1032406144. Its totient is φ = 967880700.

The previous prime is 1000143401. The next prime is 1000143433. The reversal of 1000143421 is 1243410001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1000143421 - 2²⁵ = 966588989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000143395 and 1000143404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000143401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16131315 + ... + 16131376.

It is an arithmetic number, because the mean of its divisors is an integer number (258101536).

Almost surely, 2^1000143421 is an apocalyptic number.

It is an amenable number.

1000143421 is a deficient number, since it is larger than the sum of its proper divisors (32262723).

1000143421 is an equidigital number, since it uses as much as digits as its factorization.

1000143421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32262722.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1000143421 is about 31625.0442055027. The cubic root of 1000143421 is about 1000.0478047147.

Adding to 1000143421 its reverse (1243410001), we get a palindrome (2243553422).

The spelling of 1000143421 in words is "one billion, one hundred forty-three thousand, four hundred twenty-one".