1242912611 has 2 divisors, whose sum is σ = 1242912612. Its totient is φ = 1242912610.

The previous prime is 1242912599. The next prime is 1242912623. The reversal of 1242912611 is 1162192421.

It is a balanced prime because it is at equal distance from previous prime (1242912599) and next prime (1242912623).

It is a cyclic number.

It is not a de Polignac number, because 1242912611 - 2¹⁴ = 1242896227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242912631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621456305 + 621456306.

It is an arithmetic number, because the mean of its divisors is an integer number (621456306).

Almost surely, 2^1242912611 is an apocalyptic number.

1242912611 is the 15767-th centered decagonal number.

1242912611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242912611 is an equidigital number, since it uses as much as digits as its factorization.

1242912611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The square root of 1242912611 is about 35254.9657637048. The cubic root of 1242912611 is about 1075.1775761455.

The spelling of 1242912611 in words is "one billion, two hundred forty-two million, nine hundred twelve thousand, six hundred eleven".