1001406 has 32 divisors (see below), whose sum is σ = 2320128. Its totient is φ = 282240.

The previous prime is 1001401. The next prime is 1001411. The reversal of 1001406 is 6041001.

It is an interprime number because it is at equal distance from previous prime (1001401) and next prime (1001411).

It is a junction number, because it is equal to n+sod(n) for n = 1001391 and 1001400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4641 + ... + 4851.

It is an arithmetic number, because the mean of its divisors is an integer number (72504).

2^1001406 is an apocalyptic number.

1001406 is an abundant number, since it is smaller than the sum of its proper divisors (1318722).

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

1001406 is a wasteful number, since it uses less digits than its factorization.

1001406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1001406 is about 1000.7027530691. The cubic root of 1001406 is about 100.0468447190.

Adding to 1001406 its reverse (6041001), we get a palindrome (7042407).

The spelling of 1001406 in words is "one million, one thousand, four hundred six".