2126406 has 8 divisors (see below), whose sum is σ = 4252824. Its totient is φ = 708800.

The previous prime is 2126387. The next prime is 2126407. The reversal of 2126406 is 6046212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2126406 is an admirable number.

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177195 + ... + 177206.

It is an arithmetic number, because the mean of its divisors is an integer number (531603).

2^2126406 is an apocalyptic number.

2126406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2126406 is a wasteful number, since it uses less digits than its factorization.

2126406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354406.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2126406 is about 1458.2201479886. The cubic root of 2126406 is about 128.5924279633.

The spelling of 2126406 in words is "two million, one hundred twenty-six thousand, four hundred six".