63042761 has 2 divisors, whose sum is σ = 63042762. Its totient is φ = 63042760.

The previous prime is 63042731. The next prime is 63042787. The reversal of 63042761 is 16724036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58446025 + 4596736 = 7645^2 + 2144^2 .

It is a cyclic number.

It is not a de Polignac number, because 63042761 - 2⁶ = 63042697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (63042731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31521380 + 31521381.

It is an arithmetic number, because the mean of its divisors is an integer number (31521381).

Almost surely, 2^63042761 is an apocalyptic number.

It is an amenable number.

63042761 is a deficient number, since it is larger than the sum of its proper divisors (1).

63042761 is an equidigital number, since it uses as much as digits as its factorization.

63042761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 63042761 is about 7939.9471660711. The cubic root of 63042761 is about 397.9957260721.

Adding to 63042761 its reverse (16724036), we get a palindrome (79766797).

The spelling of 63042761 in words is "sixty-three million, forty-two thousand, seven hundred sixty-one".