10143421 has 4 divisors (see below), whose sum is σ = 10199644. Its totient is φ = 10087200.

The previous prime is 10143409. The next prime is 10143433. The reversal of 10143421 is 12434101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12434101 = 89 ⋅139709.

It is an interprime number because it is at equal distance from previous prime (10143409) and next prime (10143433).

It can be written as a sum of positive squares in 2 ways, for example, as 3062500 + 7080921 = 1750^2 + 2661^2 .

It is a cyclic number.

It is not a de Polignac number, because 10143421 - 2⁵ = 10143389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10143395 and 10143404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10143401) 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, 27840 + ... + 28201.

It is an arithmetic number, because the mean of its divisors is an integer number (2549911).

Almost surely, 2^10143421 is an apocalyptic number.

It is an amenable number.

10143421 is a deficient number, since it is larger than the sum of its proper divisors (56223).

10143421 is an equidigital number, since it uses as much as digits as its factorization.

10143421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56222.

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

The square root of 10143421 is about 3184.8737808585. The cubic root of 10143421 is about 216.4685544773.

Adding to 10143421 its reverse (12434101), we get a palindrome (22577522).

The spelling of 10143421 in words is "ten million, one hundred forty-three thousand, four hundred twenty-one".