1242006511 has 2 divisors, whose sum is σ = 1242006512. Its totient is φ = 1242006510.

The previous prime is 1242006503. The next prime is 1242006529. The reversal of 1242006511 is 1156002421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242006511 - 2³ = 1242006503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242006551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621003255 + 621003256.

It is an arithmetic number, because the mean of its divisors is an integer number (621003256).

Almost surely, 2^1242006511 is an apocalyptic number.

1242006511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242006511 is an equidigital number, since it uses as much as digits as its factorization.

1242006511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1242006511 is about 35242.1127488123. The cubic root of 1242006511 is about 1074.9162396610.

Adding to 1242006511 its reverse (1156002421), we get a palindrome (2398008932).

The spelling of 1242006511 in words is "one billion, two hundred forty-two million, six thousand, five hundred eleven".