124442987 has 2 divisors, whose sum is σ = 124442988. Its totient is φ = 124442986.

The previous prime is 124442957. The next prime is 124443013. The reversal of 124442987 is 789244421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124442987 is a prime.

It is not a weakly prime, because it can be changed into another prime (124442957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62221493 + 62221494.

It is an arithmetic number, because the mean of its divisors is an integer number (62221494).

Almost surely, 2^124442987 is an apocalyptic number.

124442987 is a deficient number, since it is larger than the sum of its proper divisors (1).

124442987 is an equidigital number, since it uses as much as digits as its factorization.

124442987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The square root of 124442987 is about 11155.4016960395. The cubic root of 124442987 is about 499.2562101018.

The spelling of 124442987 in words is "one hundred twenty-four million, four hundred forty-two thousand, nine hundred eighty-seven".