1254321123 has 16 divisors (see below), whose sum is σ = 1903792896. Its totient is φ = 727142240.

The previous prime is 1254321109. The next prime is 1254321143. The reversal of 1254321123 is 3211234521.

It is not a de Polignac number, because 1254321123 - 2⁵ = 1254321091 is a prime.

It is a super-2 number, since 2×1254321123² = 3146642959207962258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1254321093 and 1254321102.

It is not an unprimeable number, because it can be changed into a prime (1254321143) 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 in 15 ways as a sum of consecutive naturals, for example, 825540 + ... + 827057.

It is an arithmetic number, because the mean of its divisors is an integer number (118987056).

Almost surely, 2^1254321123 is an apocalyptic number.

1254321123 is a deficient number, since it is larger than the sum of its proper divisors (649471773).

1254321123 is a wasteful number, since it uses less digits than its factorization.

1254321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652634.

The product of its digits is 1440, while the sum is 24.

The square root of 1254321123 is about 35416.3962452421. The cubic root of 1254321123 is about 1078.4571944059.

Adding to 1254321123 its reverse (3211234521), we get a palindrome (4465555644).

The spelling of 1254321123 in words is "one billion, two hundred fifty-four million, three hundred twenty-one thousand, one hundred twenty-three".