4972138 has 4 divisors (see below), whose sum is σ = 7458210. Its totient is φ = 2486068.

The previous prime is 4972127. The next prime is 4972147. The reversal of 4972138 is 8312794.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3157729 + 1814409 = 1777^2 + 1347^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1243033 + ... + 1243036.

Almost surely, 2^4972138 is an apocalyptic number.

4972138 is a deficient number, since it is larger than the sum of its proper divisors (2486072).

4972138 is a wasteful number, since it uses less digits than its factorization.

4972138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486071.

The product of its digits is 12096, while the sum is 34.

The square root of 4972138 is about 2229.8291414366. The cubic root of 4972138 is about 170.6793805294.

The spelling of 4972138 in words is "four million, nine hundred seventy-two thousand, one hundred thirty-eight".