1120005 has 12 divisors (see below), whose sum is σ = 1941420. Its totient is φ = 597312.

The previous prime is 1120001. The next prime is 1120019. The reversal of 1120005 is 5000211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 133956 + 986049 = 366^2 + 993^2 .

It is not a de Polignac number, because 1120005 - 2² = 1120001 is a prime.

It is a super-2 number, since 2×1120005² = 2508822400050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

1120005 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12400 + ... + 12489.

It is an arithmetic number, because the mean of its divisors is an integer number (161785).

2^1120005 is an apocalyptic number.

1120005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1120005 is a deficient number, since it is larger than the sum of its proper divisors (821415).

1120005 is a wasteful number, since it uses less digits than its factorization.

1120005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24900 (or 24897 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 1120005 is about 1058.3028867012. The cubic root of 1120005 is about 103.8500365753.

Adding to 1120005 its reverse (5000211), we get a palindrome (6120216).

The spelling of 1120005 in words is "one million, one hundred twenty thousand, five".