1242235061 has 2 divisors, whose sum is σ = 1242235062. Its totient is φ = 1242235060.

The previous prime is 1242234997. The next prime is 1242235079. The reversal of 1242235061 is 1605322421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1162400836 + 79834225 = 34094^2 + 8935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242235061 - 2⁶ = 1242234997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242235061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242235091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621117530 + 621117531.

It is an arithmetic number, because the mean of its divisors is an integer number (621117531).

Almost surely, 2^1242235061 is an apocalyptic number.

It is an amenable number.

1242235061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242235061 is an equidigital number, since it uses as much as digits as its factorization.

1242235061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1242235061 is about 35245.3551691567. The cubic root of 1242235061 is about 1074.9821698142.

Adding to 1242235061 its reverse (1605322421), we get a palindrome (2847557482).

The spelling of 1242235061 in words is "one billion, two hundred forty-two million, two hundred thirty-five thousand, sixty-one".