124125533491 has 2 divisors, whose sum is σ = 124125533492. Its totient is φ = 124125533490.

The previous prime is 124125533479. The next prime is 124125533527. The reversal of 124125533491 is 194335521421.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (194335521421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124125533491 - 2¹¹ = 124125531443 is a prime.

It is not a weakly prime, because it can be changed into another prime (124125533431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62062766745 + 62062766746.

It is an arithmetic number, because the mean of its divisors is an integer number (62062766746).

Almost surely, 2^124125533491 is an apocalyptic number.

124125533491 is a deficient number, since it is larger than the sum of its proper divisors (1).

124125533491 is an equidigital number, since it uses as much as digits as its factorization.

124125533491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The spelling of 124125533491 in words is "one hundred twenty-four billion, one hundred twenty-five million, five hundred thirty-three thousand, four hundred ninety-one".