124220242787 has 2 divisors, whose sum is σ = 124220242788. Its totient is φ = 124220242786.

The previous prime is 124220242673. The next prime is 124220242813. The reversal of 124220242787 is 787242022421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124220242787 is a prime.

It is a super-2 number, since 2×124220242787² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (124220242387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62110121393 + 62110121394.

It is an arithmetic number, because the mean of its divisors is an integer number (62110121394).

Almost surely, 2^124220242787 is an apocalyptic number.

124220242787 is a deficient number, since it is larger than the sum of its proper divisors (1).

124220242787 is an equidigital number, since it uses as much as digits as its factorization.

124220242787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200704, while the sum is 41.

The spelling of 124220242787 in words is "one hundred twenty-four billion, two hundred twenty million, two hundred forty-two thousand, seven hundred eighty-seven".