2143461 has 4 divisors (see below), whose sum is σ = 2857952. Its totient is φ = 1428972.

The previous prime is 2143459. The next prime is 2143469. The reversal of 2143461 is 1643412.

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 not a de Polignac number, because 2143461 - 2¹ = 2143459 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

2143461 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143469) 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, 357241 + ... + 357246.

It is an arithmetic number, because the mean of its divisors is an integer number (714488).

2^2143461 is an apocalyptic number.

It is an amenable number.

2143461 is a deficient number, since it is larger than the sum of its proper divisors (714491).

2143461 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 11 representation: 2143461 = (1234461)₁₁.

2143461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714490.

The product of its digits is 576, while the sum is 21.

The square root of 2143461 is about 1464.0563513745. The cubic root of 2143461 is about 128.9353079874.

Adding to 2143461 its reverse (1643412), we get a palindrome (3786873).

The spelling of 2143461 in words is "two million, one hundred forty-three thousand, four hundred sixty-one".