1242460514621 has 2 divisors, whose sum is σ = 1242460514622. Its totient is φ = 1242460514620.

The previous prime is 1242460514611. The next prime is 1242460514623. The reversal of 1242460514621 is 1264150642421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1151747508025 + 90713006596 = 1073195^2 + 301186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242460514621 is a prime.

Together with 1242460514623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242460514623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621230257310 + 621230257311.

It is an arithmetic number, because the mean of its divisors is an integer number (621230257311).

Almost surely, 2^{1242460514621} is an apocalyptic number.

It is an amenable number.

1242460514621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242460514621 is an equidigital number, since it uses as much as digits as its factorization.

1242460514621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 1242460514621 in words is "one trillion, two hundred forty-two billion, four hundred sixty million, five hundred fourteen thousand, six hundred twenty-one".