1254747841 has 2 divisors, whose sum is σ = 1254747842. Its totient is φ = 1254747840.

The previous prime is 1254747839. The next prime is 1254747863. The reversal of 1254747841 is 1487474521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 895266241 + 359481600 = 29921^2 + 18960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254747841 - 2¹ = 1254747839 is a prime.

It is a super-2 number, since 2×1254747841² = 3148784288988322562, which contains 22 as substring.

Together with 1254747839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1254748841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627373920 + 627373921.

It is an arithmetic number, because the mean of its divisors is an integer number (627373921).

Almost surely, 2^1254747841 is an apocalyptic number.

It is an amenable number.

1254747841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254747841 is an equidigital number, since it uses as much as digits as its factorization.

1254747841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250880, while the sum is 43.

The square root of 1254747841 is about 35422.4200330807. The cubic root of 1254747841 is about 1078.5794769996.

The spelling of 1254747841 in words is "one billion, two hundred fifty-four million, seven hundred forty-seven thousand, eight hundred forty-one".