1102405 has 8 divisors (see below), whose sum is σ = 1337112. Its totient is φ = 872448.

The previous prime is 1102397. The next prime is 1102411. The reversal of 1102405 is 5042011.

It can be written as a sum of positive squares in 4 ways, for example, as 272484 + 829921 = 522^2 + 911^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1102405 - 2³ = 1102397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652 + ... + 1621.

It is an arithmetic number, because the mean of its divisors is an integer number (167139).

2^1102405 is an apocalyptic number.

It is an amenable number.

1102405 is a deficient number, since it is larger than the sum of its proper divisors (234707).

1102405 is an equidigital number, since it uses as much as digits as its factorization.

1102405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1102405 is about 1049.9547609302. The cubic root of 1102405 is about 103.3031881080.

Adding to 1102405 its reverse (5042011), we get a palindrome (6144416).

The spelling of 1102405 in words is "one million, one hundred two thousand, four hundred five".