124830991 has 2 divisors, whose sum is σ = 124830992. Its totient is φ = 124830990.

The previous prime is 124830971. The next prime is 124831009. The reversal of 124830991 is 199038421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 124830991 - 2⁷ = 124830863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124830991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124830911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62415495 + 62415496.

It is an arithmetic number, because the mean of its divisors is an integer number (62415496).

Almost surely, 2^124830991 is an apocalyptic number.

124830991 is a deficient number, since it is larger than the sum of its proper divisors (1).

124830991 is an equidigital number, since it uses as much as digits as its factorization.

124830991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 124830991 is about 11172.7790186685. The cubic root of 124830991 is about 499.7745530293.

The spelling of 124830991 in words is "one hundred twenty-four million, eight hundred thirty thousand, nine hundred ninety-one".