1254423243 has 16 divisors (see below), whose sum is σ = 1769872896. Its totient is φ = 788652480.

The previous prime is 1254423221. The next prime is 1254423257. The reversal of 1254423243 is 3423244521.

It is not a de Polignac number, because 1254423243 - 2⁶ = 1254423179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1254423243.

It is not an unprimeable number, because it can be changed into a prime (1254423343) 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, 123130 + ... + 132927.

It is an arithmetic number, because the mean of its divisors is an integer number (110617056).

Almost surely, 2^1254423243 is an apocalyptic number.

1254423243 is a deficient number, since it is larger than the sum of its proper divisors (515449653).

1254423243 is a wasteful number, since it uses less digits than its factorization.

1254423243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256154.

The product of its digits is 23040, while the sum is 30.

The square root of 1254423243 is about 35417.8379210250. The cubic root of 1254423243 is about 1078.4864609837.

Adding to 1254423243 its reverse (3423244521), we get a palindrome (4677667764).

The spelling of 1254423243 in words is "one billion, two hundred fifty-four million, four hundred twenty-three thousand, two hundred forty-three".