542066449 has 2 divisors, whose sum is σ = 542066450. Its totient is φ = 542066448.

The previous prime is 542066429. The next prime is 542066477. The reversal of 542066449 is 944660245.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 533841025 + 8225424 = 23105^2 + 2868^2 .

It is a cyclic number.

It is not a de Polignac number, because 542066449 - 2²³ = 533677841 is a prime.

It is not a weakly prime, because it can be changed into another prime (542066419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271033224 + 271033225.

It is an arithmetic number, because the mean of its divisors is an integer number (271033225).

Almost surely, 2^542066449 is an apocalyptic number.

It is an amenable number.

542066449 is a deficient number, since it is larger than the sum of its proper divisors (1).

542066449 is an equidigital number, since it uses as much as digits as its factorization.

542066449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 542066449 is about 23282.3205243807. The cubic root of 542066449 is about 815.3627045561.

The spelling of 542066449 in words is "five hundred forty-two million, sixty-six thousand, four hundred forty-nine".