2143429 has 4 divisors (see below), whose sum is σ = 2154400. Its totient is φ = 2132460.

The previous prime is 2143417. The next prime is 2143441. The reversal of 2143429 is 9243412.

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 an interprime number because it is at equal distance from previous prime (2143417) and next prime (2143441).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143429 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 4⁴ + 3¹³ + 4⁵ + 2¹³ + 9⁶ .

It is a Duffinian number.

2143429 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143459) 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, 5187 + ... + 5584.

It is an arithmetic number, because the mean of its divisors is an integer number (538600).

2^2143429 is an apocalyptic number.

It is an amenable number.

2143429 is a deficient number, since it is larger than the sum of its proper divisors (10971).

2143429 is a wasteful number, since it uses less digits than its factorization.

2143429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10970.

The product of its digits is 1728, while the sum is 25.

The square root of 2143429 is about 1464.0454227926. The cubic root of 2143429 is about 128.9346663537.

The spelling of 2143429 in words is "two million, one hundred forty-three thousand, four hundred twenty-nine".