2152138 has 4 divisors (see below), whose sum is σ = 3228210. Its totient is φ = 1076068.

The previous prime is 2152127. The next prime is 2152153. The reversal of 2152138 is 8312512.

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., 2152089 + 49 = 1467^2 + 7^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538033 + ... + 538036.

2^2152138 is an apocalyptic number.

2152138 is a deficient number, since it is larger than the sum of its proper divisors (1076072).

2152138 is a wasteful number, since it uses less digits than its factorization.

2152138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076071.

The product of its digits is 480, while the sum is 22.

The square root of 2152138 is about 1467.0167006548. The cubic root of 2152138 is about 129.1090558669.

The spelling of 2152138 in words is "two million, one hundred fifty-two thousand, one hundred thirty-eight".