4812138 has 12 divisors (see below), whose sum is σ = 10426338. Its totient is φ = 1604040.

The previous prime is 4812133. The next prime is 4812151. The reversal of 4812138 is 8312184.

It can be written as a sum of positive squares in only one way, i.e., 2832489 + 1979649 = 1683^2 + 1407^2 .

It is not an unprimeable number, because it can be changed into a prime (4812131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133653 + ... + 133688.

Almost surely, 2^4812138 is an apocalyptic number.

4812138 is an abundant number, since it is smaller than the sum of its proper divisors (5614200).

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

4812138 is a wasteful number, since it uses less digits than its factorization.

4812138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267349 (or 267346 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 4812138 is about 2193.6585878390. The cubic root of 4812138 is about 168.8286020654.

It can be divided in two parts, 4812 and 138, that added together give a triangular number (4950 = T₉₉).

The spelling of 4812138 in words is "four million, eight hundred twelve thousand, one hundred thirty-eight".