542409757 has 2 divisors, whose sum is σ = 542409758. Its totient is φ = 542409756.

The previous prime is 542409727. The next prime is 542409767. The reversal of 542409757 is 757904245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309267396 + 233142361 = 17586^2 + 15269^2 .

It is a cyclic number.

It is not a de Polignac number, because 542409757 - 2¹⁹ = 541885469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542409727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271204878 + 271204879.

It is an arithmetic number, because the mean of its divisors is an integer number (271204879).

Almost surely, 2^542409757 is an apocalyptic number.

It is an amenable number.

542409757 is a deficient number, since it is larger than the sum of its proper divisors (1).

542409757 is an equidigital number, since it uses as much as digits as its factorization.

542409757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 542409757 is about 23289.6920761096. The cubic root of 542409757 is about 815.5347999800.

The spelling of 542409757 in words is "five hundred forty-two million, four hundred nine thousand, seven hundred fifty-seven".