1071405 has 24 divisors (see below), whose sum is σ = 1923480. Its totient is φ = 551040.

The previous prime is 1071401. The next prime is 1071407. The reversal of 1071405 is 5041701.

It can be written as a sum of positive squares in 4 ways, for example, as 49284 + 1022121 = 222^2 + 1011^2 .

It is not a de Polignac number, because 1071405 - 2² = 1071401 is a prime.

It is a super-2 number, since 2×1071405² = 2295817348050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 895 + ... + 1715.

It is an arithmetic number, because the mean of its divisors is an integer number (80145).

2^1071405 is an apocalyptic number.

1071405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1071405 is a deficient number, since it is larger than the sum of its proper divisors (852075).

1071405 is a wasteful number, since it uses less digits than its factorization.

1071405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 1071405 is about 1035.0869528692. The cubic root of 1071405 is about 102.3256604102.

The spelling of 1071405 in words is "one million, seventy-one thousand, four hundred five".