1242264526429 has 2 divisors, whose sum is σ = 1242264526430. Its totient is φ = 1242264526428.

The previous prime is 1242264526423. The next prime is 1242264526499. The reversal of 1242264526429 is 9246254622421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1137799822329 + 104464704100 = 1066677^2 + 323210^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242264526429 - 2¹⁷ = 1242264395357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242264526423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621132263214 + 621132263215.

It is an arithmetic number, because the mean of its divisors is an integer number (621132263215).

Almost surely, 2^{1242264526429} is an apocalyptic number.

It is an amenable number.

1242264526429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242264526429 is an equidigital number, since it uses as much as digits as its factorization.

1242264526429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3317760, while the sum is 49.

The spelling of 1242264526429 in words is "one trillion, two hundred forty-two billion, two hundred sixty-four million, five hundred twenty-six thousand, four hundred twenty-nine".