4272138 has 24 divisors (see below), whose sum is σ = 9968868. Its totient is φ = 1314432.

The previous prime is 4272119. The next prime is 4272139. The reversal of 4272138 is 8312724.

It can be written as a sum of positive squares in 2 ways, for example, as 3908529 + 363609 = 1977^2 + 603^2 .

It is not an unprimeable number, because it can be changed into a prime (4272139) 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, 8895 + ... + 9362.

Almost surely, 2^4272138 is an apocalyptic number.

4272138 is an abundant number, since it is smaller than the sum of its proper divisors (5696730).

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

4272138 is a wasteful number, since it uses less digits than its factorization.

4272138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18278 (or 18275 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 4272138 is about 2066.9150925957. The cubic root of 4272138 is about 162.2613522572.

The spelling of 4272138 in words is "four million, two hundred seventy-two thousand, one hundred thirty-eight".