1254742663 has 2 divisors, whose sum is σ = 1254742664. Its totient is φ = 1254742662.

The previous prime is 1254742633. The next prime is 1254742693. The reversal of 1254742663 is 3662474521.

It is a balanced prime because it is at equal distance from previous prime (1254742633) and next prime (1254742693).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1254742663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254742633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627371331 + 627371332.

It is an arithmetic number, because the mean of its divisors is an integer number (627371332).

Almost surely, 2^1254742663 is an apocalyptic number.

1254742663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254742663 is an equidigital number, since it uses as much as digits as its factorization.

1254742663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 40.

The square root of 1254742663 is about 35422.3469437021. The cubic root of 1254742663 is about 1078.5779933304.

The spelling of 1254742663 in words is "one billion, two hundred fifty-four million, seven hundred forty-two thousand, six hundred sixty-three".