124021739 has 2 divisors, whose sum is σ = 124021740. Its totient is φ = 124021738.

The previous prime is 124021693. The next prime is 124021741. The reversal of 124021739 is 937120421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 124021739 - 2¹² = 124017643 is a prime.

Together with 124021741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124021769) 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, 62010869 + 62010870.

It is an arithmetic number, because the mean of its divisors is an integer number (62010870).

Almost surely, 2^124021739 is an apocalyptic number.

124021739 is a deficient number, since it is larger than the sum of its proper divisors (1).

124021739 is an equidigital number, since it uses as much as digits as its factorization.

124021739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 124021739 is about 11136.5047927974. The cubic root of 124021739 is about 498.6922344808.

It can be divided in two parts, 12402 and 1739, that added together give a palindrome (14141).

The spelling of 124021739 in words is "one hundred twenty-four million, twenty-one thousand, seven hundred thirty-nine".