1001449123 has 2 divisors, whose sum is σ = 1001449124. Its totient is φ = 1001449122.

The previous prime is 1001449117. The next prime is 1001449129. The reversal of 1001449123 is 3219441001.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1001449117) and next prime (1001449129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001449123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001449129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500724561 + 500724562.

It is an arithmetic number, because the mean of its divisors is an integer number (500724562).

Almost surely, 2^1001449123 is an apocalyptic number.

1001449123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001449123 is an equidigital number, since it uses as much as digits as its factorization.

1001449123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1001449123 is about 31645.6809533307. The cubic root of 1001449123 is about 1000.4828078591.

The spelling of 1001449123 in words is "one billion, one million, four hundred forty-nine thousand, one hundred twenty-three".