1242322213 has 16 divisors (see below), whose sum is σ = 1408714560. Its totient is φ = 1085212800.

The previous prime is 1242322183. The next prime is 1242322247. The reversal of 1242322213 is 3122232421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242322213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242322313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58081 + ... + 76537.

It is an arithmetic number, because the mean of its divisors is an integer number (88044660).

Almost surely, 2^1242322213 is an apocalyptic number.

It is an amenable number.

1242322213 is a deficient number, since it is larger than the sum of its proper divisors (166392347).

1242322213 is a wasteful number, since it uses less digits than its factorization.

1242322213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18708.

The product of its digits is 1152, while the sum is 22.

The square root of 1242322213 is about 35246.5915089672. The cubic root of 1242322213 is about 1075.0073085496.

Adding to 1242322213 its reverse (3122232421), we get a palindrome (4364554634).

The spelling of 1242322213 in words is "one billion, two hundred forty-two million, three hundred twenty-two thousand, two hundred thirteen".