2143493 has 4 divisors (see below), whose sum is σ = 2338368. Its totient is φ = 1948620.

The previous prime is 2143489. The next prime is 2143501. The reversal of 2143493 is 3943412.

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 2143493 - 2² = 2143489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143483) 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, 97421 + ... + 97442.

It is an arithmetic number, because the mean of its divisors is an integer number (584592).

2^2143493 is an apocalyptic number.

It is an amenable number.

2143493 is a deficient number, since it is larger than the sum of its proper divisors (194875).

2143493 is a wasteful number, since it uses less digits than its factorization.

2143493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194874.

The product of its digits is 2592, while the sum is 26.

The square root of 2143493 is about 1464.0672798748. The cubic root of 2143493 is about 128.9359496147.

The spelling of 2143493 in words is "two million, one hundred forty-three thousand, four hundred ninety-three".