124101391 has 2 divisors, whose sum is σ = 124101392. Its totient is φ = 124101390.

The previous prime is 124101371. The next prime is 124101421. The reversal of 124101391 is 193101421.

It is a weak prime.

It is an emirp because it is prime and its reverse (193101421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124101391 - 2⁵ = 124101359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124101361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62050695 + 62050696.

It is an arithmetic number, because the mean of its divisors is an integer number (62050696).

Almost surely, 2^124101391 is an apocalyptic number.

124101391 is a deficient number, since it is larger than the sum of its proper divisors (1).

124101391 is an equidigital number, since it uses as much as digits as its factorization.

124101391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 124101391 is about 11140.0803857064. The cubic root of 124101391 is about 498.7989720403.

The spelling of 124101391 in words is "one hundred twenty-four million, one hundred one thousand, three hundred ninety-one".