2126402 has 4 divisors (see below), whose sum is σ = 3189606. Its totient is φ = 1063200.

The previous prime is 2126387. The next prime is 2126407. The reversal of 2126402 is 2046212.

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., 1371241 + 755161 = 1171^2 + 869^2 .

It is not an unprimeable number, because it can be changed into a prime (2126407) 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, 531599 + ... + 531602.

2^2126402 is an apocalyptic number.

2126402 is a deficient number, since it is larger than the sum of its proper divisors (1063204).

2126402 is a wasteful number, since it uses less digits than its factorization.

2126402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063203.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2126402 is about 1458.2187764530. The cubic root of 2126402 is about 128.5923473312.

The spelling of 2126402 in words is "two million, one hundred twenty-six thousand, four hundred two".