1254113281 has 2 divisors, whose sum is σ = 1254113282. Its totient is φ = 1254113280.

The previous prime is 1254113279. The next prime is 1254113309. The reversal of 1254113281 is 1823114521.

It is an a-pointer prime, because the next prime (1254113309) can be obtained adding 1254113281 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 943472656 + 310640625 = 30716^2 + 17625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254113281 - 2¹ = 1254113279 is a prime.

It is a super-2 number, since 2×1254113281² = 3145600243161169922, which contains 22 as substring.

Together with 1254113279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1254113881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627056640 + 627056641.

It is an arithmetic number, because the mean of its divisors is an integer number (627056641).

Almost surely, 2^1254113281 is an apocalyptic number.

It is an amenable number.

1254113281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254113281 is an equidigital number, since it uses as much as digits as its factorization.

1254113281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 28.

The square root of 1254113281 is about 35413.4618612753. The cubic root of 1254113281 is about 1078.3976240461.

The spelling of 1254113281 in words is "one billion, two hundred fifty-four million, one hundred thirteen thousand, two hundred eighty-one".