542434609 has 2 divisors, whose sum is σ = 542434610. Its totient is φ = 542434608.

The previous prime is 542434601. The next prime is 542434643. The reversal of 542434609 is 906434245.

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., 355511025 + 186923584 = 18855^2 + 13672^2 .

It is a cyclic number.

It is not a de Polignac number, because 542434609 - 2³ = 542434601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (542434601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271217304 + 271217305.

It is an arithmetic number, because the mean of its divisors is an integer number (271217305).

Almost surely, 2^542434609 is an apocalyptic number.

It is an amenable number.

542434609 is a deficient number, since it is larger than the sum of its proper divisors (1).

542434609 is an equidigital number, since it uses as much as digits as its factorization.

542434609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 542434609 is about 23290.2256107578. The cubic root of 542434609 is about 815.5472551156.

The spelling of 542434609 in words is "five hundred forty-two million, four hundred thirty-four thousand, six hundred nine".