1242242233 has 8 divisors (see below), whose sum is σ = 1247907528. Its totient is φ = 1236585984.

The previous prime is 1242242201. The next prime is 1242242257. The reversal of 1242242233 is 3322422421.

It can be written as a sum of positive squares in 4 ways, for example, as 99261369 + 1142980864 = 9963^2 + 33808^2 .

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 1242242233 - 2⁵ = 1242242201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242242198 and 1242242207.

It is not an unprimeable number, because it can be changed into a prime (1242242263) 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, 545385 + ... + 547657.

It is an arithmetic number, because the mean of its divisors is an integer number (155988441).

Almost surely, 2^1242242233 is an apocalyptic number.

It is an amenable number.

1242242233 is a deficient number, since it is larger than the sum of its proper divisors (5665295).

1242242233 is a wasteful number, since it uses less digits than its factorization.

1242242233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523.

The product of its digits is 4608, while the sum is 25.

The square root of 1242242233 is about 35245.4569129129. The cubic root of 1242242233 is about 1074.9842386007.

Adding to 1242242233 its reverse (3322422421), we get a palindrome (4564664654).

The spelling of 1242242233 in words is "one billion, two hundred forty-two million, two hundred forty-two thousand, two hundred thirty-three".