1072405 has 4 divisors (see below), whose sum is σ = 1286892. Its totient is φ = 857920.

The previous prime is 1072397. The next prime is 1072429. The reversal of 1072405 is 5042701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5042701 = 349 ⋅14449.

It can be written as a sum of positive squares in 2 ways, for example, as 443556 + 628849 = 666^2 + 793^2 .

It is not a de Polignac number, because 1072405 - 2³ = 1072397 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 3 ways as a sum of consecutive naturals, for example, 107236 + ... + 107245.

It is an arithmetic number, because the mean of its divisors is an integer number (321723).

2^1072405 is an apocalyptic number.

It is an amenable number.

1072405 is a deficient number, since it is larger than the sum of its proper divisors (214487).

1072405 is an equidigital number, since it uses as much as digits as its factorization.

1072405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214486.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 1072405 is about 1035.5698914125. The cubic root of 1072405 is about 102.3574858611.

The spelling of 1072405 in words is "one million, seventy-two thousand, four hundred five".