5121138 has 32 divisors (see below), whose sum is σ = 11538432. Its totient is φ = 1501200.

The previous prime is 5121119. The next prime is 5121143. The reversal of 5121138 is 8311215.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795 + ... + 3297.

It is an arithmetic number, because the mean of its divisors is an integer number (360576).

Almost surely, 2^5121138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5121138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5769216).

5121138 is an abundant number, since it is smaller than the sum of its proper divisors (6417294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5121138 is a wasteful number, since it uses less digits than its factorization.

5121138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550.

The product of its digits is 240, while the sum is 21.

The square root of 5121138 is about 2262.9931506746. The cubic root of 5121138 is about 172.3675437705.

It can be divided in two parts, 512113 and 8, that multiplied together give a palindrome (4096904).

The spelling of 5121138 in words is "five million, one hundred twenty-one thousand, one hundred thirty-eight".