1242261 has 12 divisors (see below), whose sum is σ = 1817088. Its totient is φ = 817704.

The previous prime is 1242251. The next prime is 1242271. The reversal of 1242261 is 1622421.

It is an interprime number because it is at equal distance from previous prime (1242251) and next prime (1242271).

It is not a de Polignac number, because 1242261 - 2¹⁷ = 1111189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (151424).

2^1242261 is an apocalyptic number.

It is an amenable number.

1242261 is a deficient number, since it is larger than the sum of its proper divisors (574827).

1242261 is a wasteful number, since it uses less digits than its factorization.

1242261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752 (or 1749 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1242261 is about 1114.5676291729. The cubic root of 1242261 is about 107.4989651965.

Adding to 1242261 its reverse (1622421), we get a palindrome (2864682).

The spelling of 1242261 in words is "one million, two hundred forty-two thousand, two hundred sixty-one".