2121346 has 4 divisors (see below), whose sum is σ = 3182022. Its totient is φ = 1060672.

The previous prime is 2121341. The next prime is 2121367. The reversal of 2121346 is 6431212.

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., 2070721 + 50625 = 1439^2 + 225^2 .

It is not an unprimeable number, because it can be changed into a prime (2121341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530335 + ... + 530338.

2^2121346 is an apocalyptic number.

2121346 is a deficient number, since it is larger than the sum of its proper divisors (1060676).

2121346 is a wasteful number, since it uses less digits than its factorization.

2121346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060675.

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

The square root of 2121346 is about 1456.4841228108. The cubic root of 2121346 is about 128.4903473498.

Adding to 2121346 its reverse (6431212), we get a palindrome (8552558).

It can be divided in two parts, 2121 and 346, that multiplied together give a triangular number (733866 = T₁₂₁₁).

The spelling of 2121346 in words is "two million, one hundred twenty-one thousand, three hundred forty-six".