1242352477 has 2 divisors, whose sum is σ = 1242352478. Its totient is φ = 1242352476.

The previous prime is 1242352451. The next prime is 1242352483. The reversal of 1242352477 is 7742532421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1090914841 + 151437636 = 33029^2 + 12306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242352477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242352777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621176238 + 621176239.

It is an arithmetic number, because the mean of its divisors is an integer number (621176239).

Almost surely, 2^1242352477 is an apocalyptic number.

It is an amenable number.

1242352477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242352477 is an equidigital number, since it uses as much as digits as its factorization.

1242352477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 37.

The square root of 1242352477 is about 35247.0208244612. The cubic root of 1242352477 is about 1075.0160378354.

Adding to 1242352477 its reverse (7742532421), we get a palindrome (8984884898).

The spelling of 1242352477 in words is "one billion, two hundred forty-two million, three hundred fifty-two thousand, four hundred seventy-seven".