2126356 has 6 divisors (see below), whose sum is σ = 3721130. Its totient is φ = 1063176.

The previous prime is 2126351. The next prime is 2126363. The reversal of 2126356 is 6536212.

It can be written as a sum of positive squares in only one way, i.e., 1587600 + 538756 = 1260^2 + 734^2 .

It is an Ulam number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2126356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265791 + ... + 265798.

2^2126356 is an apocalyptic number.

It is an amenable number.

2126356 is a deficient number, since it is larger than the sum of its proper divisors (1594774).

2126356 is a wasteful number, since it uses less digits than its factorization.

2126356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531593 (or 531591 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 2126356 is about 1458.2030037001. The cubic root of 2126356 is about 128.5914200542.

The spelling of 2126356 in words is "two million, one hundred twenty-six thousand, three hundred fifty-six".