1242503077 has 2 divisors, whose sum is σ = 1242503078. Its totient is φ = 1242503076.

The previous prime is 1242503029. The next prime is 1242503117. The reversal of 1242503077 is 7703052421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1139805121 + 102697956 = 33761^2 + 10134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242503077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242503027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621251538 + 621251539.

It is an arithmetic number, because the mean of its divisors is an integer number (621251539).

Almost surely, 2^1242503077 is an apocalyptic number.

It is an amenable number.

1242503077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242503077 is an equidigital number, since it uses as much as digits as its factorization.

1242503077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 1242503077 is about 35249.1571104899. The cubic root of 1242503077 is about 1075.0594744813.

Adding to 1242503077 its reverse (7703052421), we get a palindrome (8945555498).

The spelling of 1242503077 in words is "one billion, two hundred forty-two million, five hundred three thousand, seventy-seven".