2132406 has 20 divisors (see below), whose sum is σ = 4778532. Its totient is φ = 710748.

The previous prime is 2132401. The next prime is 2132407. The reversal of 2132406 is 6042312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2132401) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6420 + ... + 6743.

2^2132406 is an apocalyptic number.

2132406 is an abundant number, since it is smaller than the sum of its proper divisors (2646126).

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

2132406 is a wasteful number, since it uses less digits than its factorization.

2132406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13177 (or 13168 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2132406 is about 1460.2760013093. The cubic root of 2132406 is about 128.7132625255.

Adding to 2132406 its reverse (6042312), we get a palindrome (8174718).

The spelling of 2132406 in words is "two million, one hundred thirty-two thousand, four hundred six".