1213735 has 4 divisors (see below), whose sum is σ = 1456488. Its totient is φ = 970984.

The previous prime is 1213721. The next prime is 1213741. The reversal of 1213735 is 5373121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213735 - 2⁷ = 1213607 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, 121369 + ... + 121378.

It is an arithmetic number, because the mean of its divisors is an integer number (364122).

2^1213735 is an apocalyptic number.

1213735 is a deficient number, since it is larger than the sum of its proper divisors (242753).

1213735 is an equidigital number, since it uses as much as digits as its factorization.

1213735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242752.

The product of its digits is 630, while the sum is 22.

The square root of 1213735 is about 1101.6964191646. The cubic root of 1213735 is about 106.6697535999.

Adding to 1213735 its reverse (5373121), we get a palindrome (6586856).

The spelling of 1213735 in words is "one million, two hundred thirteen thousand, seven hundred thirty-five".