1200135 has 16 divisors (see below), whose sum is σ = 2021760. Its totient is φ = 606240.

The previous prime is 1200109. The next prime is 1200139. The reversal of 1200135 is 5310021.

1200135 = 62² + 63² + ... + 156².

It is not a de Polignac number, because 1200135 - 2⁷ = 1200007 is a prime.

1200135 is a modest number, since divided by 135 gives 120 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1200135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1821 + ... + 2390.

It is an arithmetic number, because the mean of its divisors is an integer number (126360).

2^1200135 is an apocalyptic number.

1200135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1200135 is a deficient number, since it is larger than the sum of its proper divisors (821625).

1200135 is a wasteful number, since it uses less digits than its factorization.

1200135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1200135 is about 1095.5067320651. The cubic root of 1200135 is about 106.2698417385.

Adding to 1200135 its reverse (5310021), we get a palindrome (6510156).

The spelling of 1200135 in words is "one million, two hundred thousand, one hundred thirty-five".