1242324221 has 8 divisors (see below), whose sum is σ = 1252651488. Its totient is φ = 1232010000.

The previous prime is 1242324191. The next prime is 1242324229. The reversal of 1242324221 is 1224232421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242324221 - 2²⁶ = 1175215357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242324229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304646 + ... + 308696.

It is an arithmetic number, because the mean of its divisors is an integer number (156581436).

Almost surely, 2^1242324221 is an apocalyptic number.

It is an amenable number.

1242324221 is a deficient number, since it is larger than the sum of its proper divisors (10327267).

1242324221 is a wasteful number, since it uses less digits than its factorization.

1242324221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523.

The product of its digits is 1536, while the sum is 23.

The square root of 1242324221 is about 35246.6199939796. The cubic root of 1242324221 is about 1075.0078877373.

Adding to 1242324221 its reverse (1224232421), we get a palindrome (2466556642).

The spelling of 1242324221 in words is "one billion, two hundred forty-two million, three hundred twenty-four thousand, two hundred twenty-one".