1254740761 has 2 divisors, whose sum is σ = 1254740762. Its totient is φ = 1254740760.

The previous prime is 1254740749. The next prime is 1254740783. The reversal of 1254740761 is 1670474521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1251744400 + 2996361 = 35380^2 + 1731^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254740761 - 2¹³ = 1254732569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1254740761.

It is not a weakly prime, because it can be changed into another prime (1254747761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627370380 + 627370381.

It is an arithmetic number, because the mean of its divisors is an integer number (627370381).

Almost surely, 2^1254740761 is an apocalyptic number.

It is an amenable number.

1254740761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254740761 is an equidigital number, since it uses as much as digits as its factorization.

1254740761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 1254740761 is about 35422.3200962331. The cubic root of 1254740761 is about 1078.5774483431.

The spelling of 1254740761 in words is "one billion, two hundred fifty-four million, seven hundred forty thousand, seven hundred sixty-one".