124225891 has 2 divisors, whose sum is σ = 124225892. Its totient is φ = 124225890.

The previous prime is 124225889. The next prime is 124225901. The reversal of 124225891 is 198522421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124225891 - 2¹ = 124225889 is a prime.

Together with 124225889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (124225811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62112945 + 62112946.

It is an arithmetic number, because the mean of its divisors is an integer number (62112946).

Almost surely, 2^124225891 is an apocalyptic number.

124225891 is a deficient number, since it is larger than the sum of its proper divisors (1).

124225891 is an equidigital number, since it uses as much as digits as its factorization.

124225891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 124225891 is about 11145.6669158916. Note that the first 3 decimals coincide. The cubic root of 124225891 is about 498.9657166578.

The spelling of 124225891 in words is "one hundred twenty-four million, two hundred twenty-five thousand, eight hundred ninety-one".