1042406 has 32 divisors (see below), whose sum is σ = 1824768. Its totient is φ = 443520.

The previous prime is 1042399. The next prime is 1042427. The reversal of 1042406 is 6042401.

It is a super-2 number, since 2×1042406² = 2173220537672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24221 + ... + 24263.

It is an arithmetic number, because the mean of its divisors is an integer number (57024).

2^1042406 is an apocalyptic number.

1042406 is a deficient number, since it is larger than the sum of its proper divisors (782362).

1042406 is a wasteful number, since it uses less digits than its factorization.

1042406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116.

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

The square root of 1042406 is about 1020.9828597974. The cubic root of 1042406 is about 101.3940103861.

Adding to 1042406 its reverse (6042401), we get a palindrome (7084807).

The spelling of 1042406 in words is "one million, forty-two thousand, four hundred six".