1212741 has 18 divisors (see below), whose sum is σ = 1819142. Its totient is φ = 778320.

The previous prime is 1212737. The next prime is 1212769. The reversal of 1212741 is 1472121.

It can be written as a sum of positive squares in only one way, i.e., 715716 + 497025 = 846^2 + 705^2 .

It is not a de Polignac number, because 1212741 - 2² = 1212737 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

1212741 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212781) 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 17 ways as a sum of consecutive naturals, for example, 19851 + ... + 19911.

2^1212741 is an apocalyptic number.

It is an amenable number.

1212741 is a deficient number, since it is larger than the sum of its proper divisors (606401).

1212741 is an equidigital number, since it uses as much as digits as its factorization.

1212741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 111 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 1212741 is about 1101.2452043028. The cubic root of 1212741 is about 106.6406262388.

Adding to 1212741 its reverse (1472121), we get a palindrome (2684862).

It can be divided in two parts, 1212 and 741, that added together give a triangular number (1953 = T₆₂).

The spelling of 1212741 in words is "one million, two hundred twelve thousand, seven hundred forty-one".