2543138 has 8 divisors (see below), whose sum is σ = 4108188. Its totient is φ = 1173744.

The previous prime is 2543129. The next prime is 2543141. The reversal of 2543138 is 8313452.

It can be written as a sum of positive squares in 2 ways, for example, as 2505889 + 37249 = 1583^2 + 193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 97813 = 2543138 / (2 + 5 + 4 + 3 + 1 + 3 + 8).

It is a d-powerful number, because it can be written as 2²¹ + 5³ + 4⁹ + 3⁸ + 1 + 3¹¹ + 8 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48881 + ... + 48932.

2^2543138 is an apocalyptic number.

2543138 is a deficient number, since it is larger than the sum of its proper divisors (1565050).

2543138 is a wasteful number, since it uses less digits than its factorization.

2543138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97828.

The product of its digits is 2880, while the sum is 26.

The square root of 2543138 is about 1594.7219193326. The cubic root of 2543138 is about 136.4970637196.

The spelling of 2543138 in words is "two million, five hundred forty-three thousand, one hundred thirty-eight".