124204391 has 2 divisors, whose sum is σ = 124204392. Its totient is φ = 124204390.

The previous prime is 124204373. The next prime is 124204429. The reversal of 124204391 is 193402421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124204391 - 2¹⁰ = 124203367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124204391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124204331) 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, 62102195 + 62102196.

It is an arithmetic number, because the mean of its divisors is an integer number (62102196).

Almost surely, 2^124204391 is an apocalyptic number.

124204391 is a deficient number, since it is larger than the sum of its proper divisors (1).

124204391 is an equidigital number, since it uses as much as digits as its factorization.

124204391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 124204391 is about 11144.7023737738. The cubic root of 124204391 is about 498.9369293635.

The spelling of 124204391 in words is "one hundred twenty-four million, two hundred four thousand, three hundred ninety-one".