1242330211 has 4 divisors (see below), whose sum is σ = 1296344592. Its totient is φ = 1188315832.

The previous prime is 1242330203. The next prime is 1242330223. The reversal of 1242330211 is 1120332421.

It is a happy number.

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 1242330211 - 2³ = 1242330203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242330251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27007156 + ... + 27007201.

It is an arithmetic number, because the mean of its divisors is an integer number (324086148).

Almost surely, 2^1242330211 is an apocalyptic number.

1242330211 is a deficient number, since it is larger than the sum of its proper divisors (54014381).

1242330211 is an equidigital number, since it uses as much as digits as its factorization.

1242330211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54014380.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1242330211 is about 35246.7049665639. The cubic root of 1242330211 is about 1075.0096154900.

Adding to 1242330211 its reverse (1120332421), we get a palindrome (2362662632).

The spelling of 1242330211 in words is "one billion, two hundred forty-two million, three hundred thirty thousand, two hundred eleven".