1242020233 has 2 divisors, whose sum is σ = 1242020234. Its totient is φ = 1242020232.

The previous prime is 1242020203. The next prime is 1242020293. The reversal of 1242020233 is 3320202421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999065664 + 242954569 = 31608^2 + 15587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242020233 is a prime.

It is a super-2 number, since 2×1242020233² = 3085228518362748578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1242020233.

It is not a weakly prime, because it can be changed into another prime (1242020203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621010116 + 621010117.

It is an arithmetic number, because the mean of its divisors is an integer number (621010117).

Almost surely, 2^1242020233 is an apocalyptic number.

It is an amenable number.

1242020233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242020233 is an equidigital number, since it uses as much as digits as its factorization.

1242020233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1242020233 is about 35242.3074301329. The cubic root of 1242020233 is about 1074.9201982946.

Adding to 1242020233 its reverse (3320202421), we get a palindrome (4562222654).

The spelling of 1242020233 in words is "one billion, two hundred forty-two million, twenty thousand, two hundred thirty-three".