1001232123 has 16 divisors (see below), whose sum is σ = 1344000000. Its totient is φ = 662987520.

The previous prime is 1001232109. The next prime is 1001232139. The reversal of 1001232123 is 3212321001.

It is not a de Polignac number, because 1001232123 - 2⁹ = 1001231611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001232103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714978 + ... + 716376.

It is an arithmetic number, because the mean of its divisors is an integer number (84000000).

Almost surely, 2^1001232123 is an apocalyptic number.

1001232123 is a deficient number, since it is larger than the sum of its proper divisors (342767877).

1001232123 is a wasteful number, since it uses less digits than its factorization.

1001232123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1001232123 is about 31642.2521796411. The cubic root of 1001232123 is about 1000.4105391012.

Adding to 1001232123 its reverse (3212321001), we get a palindrome (4213553124).

The spelling of 1001232123 in words is "one billion, one million, two hundred thirty-two thousand, one hundred twenty-three".