124804991 has 2 divisors, whose sum is σ = 124804992. Its totient is φ = 124804990.

The previous prime is 124804957. The next prime is 124805003. The reversal of 124804991 is 199408421.

It is a strong prime.

It is an emirp because it is prime and its reverse (199408421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124804991 - 2¹⁴ = 124788607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124804921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62402495 + 62402496.

It is an arithmetic number, because the mean of its divisors is an integer number (62402496).

Almost surely, 2^124804991 is an apocalyptic number.

124804991 is a deficient number, since it is larger than the sum of its proper divisors (1).

124804991 is an equidigital number, since it uses as much as digits as its factorization.

124804991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 124804991 is about 11171.6154158653. The cubic root of 124804991 is about 499.7398526702.

It can be divided in two parts, 12480 and 4991, that added together give a palindrome (17471).

The spelling of 124804991 in words is "one hundred twenty-four million, eight hundred four thousand, nine hundred ninety-one".