2143258 has 24 divisors (see below), whose sum is σ = 3695868. Its totient is φ = 928512.

The previous prime is 2143243. The next prime is 2143259. The reversal of 2143258 is 8523412.

It can be written as a sum of positive squares in 6 ways, for example, as 613089 + 1530169 = 783^2 + 1237^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5560 + ... + 5932.

2^2143258 is an apocalyptic number.

2143258 is a deficient number, since it is larger than the sum of its proper divisors (1552610).

2143258 is a wasteful number, since it uses less digits than its factorization.

2143258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 405 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 2143258 is about 1463.9870218004. The cubic root of 2143258 is about 128.9312375154.

It can be divided in two parts, 2143 and 258, that added together give a 4-th power (2401 = 7⁴).

The spelling of 2143258 in words is "two million, one hundred forty-three thousand, two hundred fifty-eight".