642248622107 has 2 divisors, whose sum is σ = 642248622108. Its totient is φ = 642248622106.

The previous prime is 642248622073. The next prime is 642248622133. The reversal of 642248622107 is 701226842246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 642248622107 - 2³⁸ = 367370715163 is a prime.

It is not a weakly prime, because it can be changed into another prime (642248622307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321124311053 + 321124311054.

It is an arithmetic number, because the mean of its divisors is an integer number (321124311054).

Almost surely, 2^642248622107 is an apocalyptic number.

642248622107 is a deficient number, since it is larger than the sum of its proper divisors (1).

642248622107 is an equidigital number, since it uses as much as digits as its factorization.

642248622107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 642248622107 in words is "six hundred forty-two billion, two hundred forty-eight million, six hundred twenty-two thousand, one hundred seven".