542147761 has 2 divisors, whose sum is σ = 542147762. Its totient is φ = 542147760.

The previous prime is 542147737. The next prime is 542147803. The reversal of 542147761 is 167741245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303630625 + 238517136 = 17425^2 + 15444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542147761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542147761.

It is not a weakly prime, because it can be changed into another prime (542147161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271073880 + 271073881.

It is an arithmetic number, because the mean of its divisors is an integer number (271073881).

Almost surely, 2^542147761 is an apocalyptic number.

It is an amenable number.

542147761 is a deficient number, since it is larger than the sum of its proper divisors (1).

542147761 is an equidigital number, since it uses as much as digits as its factorization.

542147761 is an odious number, because the sum of its binary digits is odd.

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

The square root of 542147761 is about 23284.0666765924. The cubic root of 542147761 is about 815.4034716721.

The spelling of 542147761 in words is "five hundred forty-two million, one hundred forty-seven thousand, seven hundred sixty-one".