2123146 has 4 divisors (see below), whose sum is σ = 3184722. Its totient is φ = 1061572.

The previous prime is 2123141. The next prime is 2123161. The reversal of 2123146 is 6413212.

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., 1500625 + 622521 = 1225^2 + 789^2 .

It is not an unprimeable number, because it can be changed into a prime (2123141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530785 + ... + 530788.

2^2123146 is an apocalyptic number.

2123146 is a deficient number, since it is larger than the sum of its proper divisors (1061576).

2123146 is a wasteful number, since it uses less digits than its factorization.

2123146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061575.

The product of its digits is 288, while the sum is 19.

The square root of 2123146 is about 1457.1019181924. The cubic root of 2123146 is about 128.5266791945.

Adding to 2123146 its reverse (6413212), we get a palindrome (8536358).

The spelling of 2123146 in words is "two million, one hundred twenty-three thousand, one hundred forty-six".