2042406 has 12 divisors (see below), whose sum is σ = 4425252. Its totient is φ = 680796.

The previous prime is 2042401. The next prime is 2042419. The reversal of 2042406 is 6042402.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 113467 = 2042406 / (2 + 0 + 4 + 2 + 4 + 0 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56716 + ... + 56751.

It is an arithmetic number, because the mean of its divisors is an integer number (368771).

2^2042406 is an apocalyptic number.

2042406 is an abundant number, since it is smaller than the sum of its proper divisors (2382846).

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

2042406 is a wasteful number, since it uses less digits than its factorization.

2042406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113475 (or 113472 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2042406 is about 1429.1277059801. The cubic root of 2042406 is about 126.8763547462.

Adding to 2042406 its reverse (6042402), we get a palindrome (8084808).

The spelling of 2042406 in words is "two million, forty-two thousand, four hundred six".