1061405 has 4 divisors (see below), whose sum is σ = 1273692. Its totient is φ = 849120.

The previous prime is 1061393. The next prime is 1061407. The reversal of 1061405 is 5041601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 770884 + 290521 = 878^2 + 539^2 .

It is not a de Polignac number, because 1061405 - 2⁸ = 1061149 is a prime.

It is a super-2 number, since 2×1061405² = 2253161148050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106136 + ... + 106145.

It is an arithmetic number, because the mean of its divisors is an integer number (318423).

2^1061405 is an apocalyptic number.

It is an amenable number.

1061405 is a deficient number, since it is larger than the sum of its proper divisors (212287).

1061405 is an equidigital number, since it uses as much as digits as its factorization.

1061405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212286.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1061405 is about 1030.2451164650. The cubic root of 1061405 is about 102.0063112845.

The spelling of 1061405 in words is "one million, sixty-one thousand, four hundred five".