1242210023 has 2 divisors, whose sum is σ = 1242210024. Its totient is φ = 1242210022.

The previous prime is 1242210007. The next prime is 1242210061. The reversal of 1242210023 is 3200122421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242210023 - 2⁴ = 1242210007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242209983 and 1242210010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242210323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621105011 + 621105012.

It is an arithmetic number, because the mean of its divisors is an integer number (621105012).

Almost surely, 2^1242210023 is an apocalyptic number.

1242210023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242210023 is an equidigital number, since it uses as much as digits as its factorization.

1242210023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1242210023 is about 35244.9999716272. Note that the first 4 decimals coincide. The cubic root of 1242210023 is about 1074.9749474602.

Adding to 1242210023 its reverse (3200122421), we get a palindrome (4442332444).

The spelling of 1242210023 in words is "one billion, two hundred forty-two million, two hundred ten thousand, twenty-three".